{"id":5154,"date":"2024-12-26T20:46:00","date_gmt":"2024-12-26T11:46:00","guid":{"rendered":"https:\/\/torisetudy.com\/?p=5154"},"modified":"2026-03-09T17:45:12","modified_gmt":"2026-03-09T08:45:12","slug":"%e4%b8%89%e8%a7%92%e6%af%94%e3%81%ae%e5%ae%9a%e7%90%86","status":"publish","type":"post","link":"https:\/\/torisetudy.com\/?p=5154","title":{"rendered":"\u4e09\u89d2\u6bd4\u306e\u5b9a\u7406"},"content":{"rendered":"\n<div id=\"toc_container\" class=\"no_bullets\"><p class=\"toc_title\">\u76ee\u6b21<\/p><ul class=\"toc_list\"><li><a href=\"#i\"><span class=\"toc_number toc_depth_1\">1<\/span> \u6b63\u5f26\u5b9a\u7406<\/a><\/li><li><a href=\"#i-2\"><span class=\"toc_number toc_depth_1\">2<\/span> \u6b63\u5f26\u5b9a\u7406<\/a><\/li><li><a href=\"#i-3\"><span class=\"toc_number toc_depth_1\">3<\/span> \u4f59\u5f26\u5b9a\u7406<\/a><\/li><\/ul><\/div>\n<h2 class=\"wp-block-heading\"><span id=\"i\">\u6b63\u5f26\u5b9a\u7406<\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u6e96\u5099<\/h3>\n\n\n\n<p>\u3053\u3053\u307e\u3067\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\uff0c\u4e09\u89d2\u6bd4\u306e\u5b9a\u7fa9\u3084\u305d\u306e\u6271\u3044\u65b9\u306b\u3064\u3044\u3066\u5b66\u7fd2\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u6700\u521d\u306b\u304a\u4f1d\u3048\u3057\u305f\u901a\u308a\uff0c\u4e09\u89d2\u6bd4\u306e\u6839\u5e95\u306b\u306f\u300c\u76f8\u4f3c\u306e\u6982\u5ff5\u300d\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5f53\u7136\u3067\u3059\u304c\uff0c\u4e09\u89d2\u6bd4\u306f\u56f3\u5f62\u306b\u5fdc\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u307e\u3067\u79c1\u305f\u3061\u304c\u3082\u3063\u3066\u3044\u305f\u56f3\u5f62\u3092\u6271\u3046\u30c4\u30fc\u30eb\u306f\u300c\u76f8\u4f3c\u300d\u3084\u300c\u4e09\u5e73\u65b9\u306e\u5b9a\u7406\u300d\u3068\u3044\u3063\u305f\u9650\u3089\u308c\u305f\u3082\u306e\u3060\u3051\u3067\u3057\u305f\u304c\uff0c\u4e09\u89d2\u6bd4\u3092\u7528\u3044\u308b\u3053\u3068\u306b\u3088\u3063\u3066\uff0c\u3088\u308a\u30b7\u30f3\u30d7\u30eb\u306b\uff0c\u3088\u308a\u7c21\u6f54\u306b\u56f3\u5f62\u3092\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4eca\u56de\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\uff0c\u4e09\u89d2\u6bd4\u3092\u56f3\u5f62\u3067\u5fdc\u7528\u3059\u308b\u6280\u6cd5\u3092\u5b66\u3093\u3067\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<div class=\"st-kaiwa-box kaiwaicon1 clearfix\"><div class=\"st-kaiwa-face\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><noscript><img decoding=\"async\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><\/noscript><div class=\"st-kaiwa-face-name\">\u7fbd\u767d<\/div><\/div><div class=\"st-kaiwa-area\"><div class=\"st-kaiwa-hukidashi\"><div class=\"wp-block-st-blocks-st-kaiwa\">\n<p>\u307e\u305a\uff0c\u524d\u63d0\u3068\u306a\u308b\u4e0b\u8a18\u306e\u7d04\u675f\u4e8b\u3092\u77e5\u3063\u3066\u304a\u3044\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<\/div><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-st-blocks-my-box st-mybox has-title post-hashiro-normalbox\" style=\"background-color:#fff;border-color:#777777\"><p class=\"st-mybox-title\" style=\"color:#777777;font-weight:bold;text-shadow:#fff 3px 0px 0px, #fff 2.83487px .981584px 0px, #fff 2.35766px 1.85511px 0px, #fff 1.62091px 2.52441px 0px, #fff .705713px 2.91581px 0px, #fff -0.287171px 2.98622px 0px, #fff -1.24844px 2.72789px 0px, #fff -2.07227px 2.16926px 0px, #fff -2.66798px 1.37182px 0px, #fff -2.96998px .42336px 0px, #fff -2.94502px -0.571704px 0px, #fff -2.59586px -1.50383px 0px, #fff -1.96093px -2.27041px 0px, #fff -1.11013px -2.78704px 0px, #fff -0.137119px -2.99686px 0px, #fff .850987px -2.87677px 0px, #fff 1.74541px -2.43999px 0px, #fff 2.44769px -1.73459px 0px, #fff 2.88051px -0.838246px 0px;background:linear-gradient(0deg, #fff 0%, #fff 55%, rgba(0, 0, 0, 0) 55%, rgba(0, 0, 0, 0) 100%)\"><i class=\"st-fa st-svg-check-circle st-css-no\" aria-hidden=\"\"><\/i>\u540d\u524d\u306e\u4ed8\u3051\u65b9<\/p><div class=\"st-in-mybox\">\n<p>$\\triangle\\rmA\\rmB\\rmC$ \u306b\u304a\u3044\u3066\uff0c\u9802\u70b9 $\\rmA$\uff0c$\\rmB$\uff0c$\\rmC$ \u306b\u5411\u304b\u3044\u5408\u3046\u8fba $\\rmB\\rmC$\uff0c$\\rmC\\rmA$\uff0c$\\rmA\\rmB$ \u306e\u9577\u3055\u3092\uff0c\u305d\u308c\u305e\u308c $a,\\ b,\\ c$ \u3067\u8868\u3057\uff0c$\\angle\\rmA,\\ \\angle\\rmB,\\ \\angle\\rmC$ \u306e\u5927\u304d\u3055\u3092\uff0c\u305d\u308c\u305e\u308c $A,\\ B,\\ C$ \u3067\u8868\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large physicsimg\"><img decoding=\"async\" width=\"168\" height=\"124\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u6570\u5b66068.svg\" alt=\"\" class=\"wp-image-5107\"\/><noscript><img decoding=\"async\" width=\"168\" height=\"124\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u6570\u5b66068.svg\" alt=\"\" class=\"wp-image-5107\"\/><\/noscript><\/figure>\n\n\n\n<div style=\"height:0px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div><\/div>\n\n\n\n<p>\u3055\u3066\uff0c\u3053\u308c\u3092\u8e0f\u307e\u3048\u305f\u4e0a\u3067\uff0c\u4e09\u89d2\u6bd4\u3068\u56f3\u5f62\u306e\u91cd\u8981\u516c\u5f0f\u306e1\u3064\u76ee\u3092\u5b66\u7fd2\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span id=\"i-2\">\u6b63\u5f26\u5b9a\u7406<\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u6b63\u5f26\u5b9a\u7406<\/h3>\n\n\n\n<p>\u307e\u305a\u306f $\\sin$\uff08\u6b63\u5f26\uff09\u306b\u95a2\u3059\u308b\u5b9a\u7406\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-st-blocks-my-box st-mybox has-title post-hashiro-point\" style=\"background-color:#fff;border-color:#ff7f50\"><p class=\"st-mybox-title\" style=\"color:#ff7f50;font-weight:bold;text-shadow:#fff 3px 0px 0px, #fff 2.83487px .981584px 0px, #fff 2.35766px 1.85511px 0px, #fff 1.62091px 2.52441px 0px, #fff .705713px 2.91581px 0px, #fff -0.287171px 2.98622px 0px, #fff -1.24844px 2.72789px 0px, #fff -2.07227px 2.16926px 0px, #fff -2.66798px 1.37182px 0px, #fff -2.96998px .42336px 0px, #fff -2.94502px -0.571704px 0px, #fff -2.59586px -1.50383px 0px, #fff -1.96093px -2.27041px 0px, #fff -1.11013px -2.78704px 0px, #fff -0.137119px -2.99686px 0px, #fff .850987px -2.87677px 0px, #fff 1.74541px -2.43999px 0px, #fff 2.44769px -1.73459px 0px, #fff 2.88051px -0.838246px 0px;background:linear-gradient(0deg, #fff 0%, #fff 55%, rgba(0, 0, 0, 0) 55%, rgba(0, 0, 0, 0) 100%)\"><i class=\"st-fa st-svg-lightbulb-o st-css-no\" aria-hidden=\"\"><\/i>\u6b63\u5f26\u5b9a\u7406<\/p><div class=\"st-in-mybox\">\n<p class=\"has-st-margin-bottom has-st-margin-bottom--1\">$\\triangle\\rmA\\rmB\\rmC$ \u306e\u5916\u63a5\u5186\u306e\u534a\u5f84\u3092 $R$ \u3068\u3059\u308b\u3068\uff0c<\/p>\n\n\n\n<p class=\"has-st-margin-bottom has-st-margin-bottom--1\">$$\\bun{a}{\\sin A}=\\bun{b}{\\sin B}=\\bun{c}{\\sin C}=2R$$<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image size-large physicsimg\"><img decoding=\"async\" width=\"142\" height=\"130\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u6570\u5b66349.svg\" alt=\"\" class=\"wp-image-5108\"\/><noscript><img decoding=\"async\" width=\"142\" height=\"130\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u6570\u5b66349.svg\" alt=\"\" class=\"wp-image-5108\"\/><\/noscript><\/figure>\n\n\n\n<div style=\"height:0px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div><\/div>\n\n\n\n<p>\u5916\u63a5\u5186\u3068\u306f\uff0c\u4e09\u89d2\u5f62\u306e3\u9802\u70b9\u3059\u3079\u3066\u3092\u901a\u308b\u5186\u306e\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"st-kaiwa-box kaiwaicon1 clearfix\"><div class=\"st-kaiwa-face\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><noscript><img decoding=\"async\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><\/noscript><div class=\"st-kaiwa-face-name\">\u7fbd\u767d<\/div><\/div><div class=\"st-kaiwa-area\"><div class=\"st-kaiwa-hukidashi\"><div class=\"wp-block-st-blocks-st-kaiwa\">\n<p>\u7269\u7406\u3067\u6b63\u5f26\u5b9a\u7406\u3092\u7528\u3044\u308b\u6a5f\u4f1a\u306f\u591a\u304f\u3042\u308a\u307e\u305b\u3093\u3002\u7269\u7406\u306e\u6e96\u5099\u3068\u3057\u3066\u306f\u300c\u3075\u30fc\u3093\uff0c\u305d\u3046\u3044\u3046\u5b9a\u7406\u304c\u3042\u308b\u306e\u304b\u3041\u300d\u304f\u3089\u3044\u306b\u6d41\u3057\u3066\u3082\u3089\u3063\u3066\u69cb\u3044\u307e\u305b\u3093\u3002<\/p>\n<\/div><\/div><\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span id=\"i-3\">\u4f59\u5f26\u5b9a\u7406<\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f59\u5f26\u5b9a\u7406<\/h3>\n\n\n\n<p>\u4e09\u89d2\u6bd4\u3068\u56f3\u5f62\u306e\u91cd\u8981\u516c\u5f0f\u306e2\u3064\u76ee\u3067\u3059\uff01<\/p>\n\n\n\n<div class=\"st-kaiwa-box kaiwaicon1 clearfix\"><div class=\"st-kaiwa-face\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><noscript><img decoding=\"async\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><\/noscript><div class=\"st-kaiwa-face-name\">\u7fbd\u767d<\/div><\/div><div class=\"st-kaiwa-area\"><div class=\"st-kaiwa-hukidashi\"><div class=\"wp-block-st-blocks-st-kaiwa\">\n<p>\u3053\u3061\u3089\u306e\u4f59\u5f26\u5b9a\u7406\u306f\u7269\u7406\u3067\u3082\u305f\u3073\u305f\u3073\u767b\u5834\u3057\u307e\u3059\u306e\u3067\uff0c\u3057\u3063\u304b\u308a\u899a\u3048\u307e\u3057\u3087\u3046\uff01<\/p>\n<\/div><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-st-blocks-my-box st-mybox has-title post-hashiro-point\" style=\"background-color:#fff;border-color:#ff7f50\"><p class=\"st-mybox-title\" style=\"color:#ff7f50;font-weight:bold;text-shadow:#fff 3px 0px 0px, #fff 2.83487px .981584px 0px, #fff 2.35766px 1.85511px 0px, #fff 1.62091px 2.52441px 0px, #fff .705713px 2.91581px 0px, #fff -0.287171px 2.98622px 0px, #fff -1.24844px 2.72789px 0px, #fff -2.07227px 2.16926px 0px, #fff -2.66798px 1.37182px 0px, #fff -2.96998px .42336px 0px, #fff -2.94502px -0.571704px 0px, #fff -2.59586px -1.50383px 0px, #fff -1.96093px -2.27041px 0px, #fff -1.11013px -2.78704px 0px, #fff -0.137119px -2.99686px 0px, #fff .850987px -2.87677px 0px, #fff 1.74541px -2.43999px 0px, #fff 2.44769px -1.73459px 0px, #fff 2.88051px -0.838246px 0px;background:linear-gradient(0deg, #fff 0%, #fff 55%, rgba(0, 0, 0, 0) 55%, rgba(0, 0, 0, 0) 100%)\"><i class=\"st-fa st-svg-lightbulb-o st-css-no\" aria-hidden=\"\"><\/i>\u6b63\u5f26\u5b9a\u7406 \u305d\u306e\u2460<\/p><div class=\"st-in-mybox\">\n<p class=\"has-st-margin-bottom has-st-margin-bottom--1\">$\\triangle\\rmA\\rmB\\rmC$ \u306b\u304a\u3044\u3066\uff0c\u4ee5\u4e0b\u306e\u5f0f\u304c\u6210\u308a\u7acb\u3064\u3002<\/p>\n\n\n\n<p class=\"has-st-margin-bottom has-st-margin-bottom--1\">$$\\begin{aligned} a^2&amp;=b^2+c^2-2bc\\cos A\\\\ b^2&amp;=c^2+a^2-2ca\\cos B\\\\ c^2&amp;=a^2+b^2-2ab\\cos C \\end{aligned}$$<\/p>\n\n\n\n<figure class=\"wp-block-image size-large physicsimg\"><img decoding=\"async\" width=\"168\" height=\"124\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u6570\u5b66068.svg\" alt=\"\" class=\"wp-image-5107\"\/><noscript><img decoding=\"async\" width=\"168\" height=\"124\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u6570\u5b66068.svg\" alt=\"\" class=\"wp-image-5107\"\/><\/noscript><\/figure>\n\n\n\n<div style=\"height:0px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div><\/div>\n\n\n\n<p>\u3053\u306e\u4f59\u5f26\u5b9a\u7406\u3092\u7528\u3044\u308b\u3053\u3068\u3067\uff0c3\u8fba\u306e\u9577\u3055\u304c\u308f\u304b\u3063\u3066\u3044\u308b\u3068\u304d\uff0c\u89d2\u5ea6\uff08\u6b63\u78ba\u306b\u306f $\\cos$ \u306e\u5024\uff09\u3092\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5225\u306e\u8868\u73fe<\/h3>\n\n\n\n<p>\u4f59\u5f26\u5b9a\u7406\u3092\u5c11\u3057\u5909\u5f62\u3057\u305f\uff0c\u4e0b\u8a18\u306e\u516c\u5f0f\u3082\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"st-kaiwa-box kaiwaicon1 clearfix\"><div class=\"st-kaiwa-face\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><noscript><img decoding=\"async\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><\/noscript><div class=\"st-kaiwa-face-name\">\u7fbd\u767d<\/div><\/div><div class=\"st-kaiwa-area\"><div class=\"st-kaiwa-hukidashi\"><div class=\"wp-block-st-blocks-st-kaiwa\">\n<p>\u3053\u306e\u5f62\u3067\u899a\u3048\u3066\u304a\u304f\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5909\u5f62\u3059\u308b\u3068\u78ba\u304b\u306b\u3053\u3046\u306a\u308b\u306a\u3041\uff0c\u3068\u773a\u3081\u3066\u304a\u3044\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<\/div><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-st-blocks-my-box st-mybox has-title post-hashiro-point\" style=\"background-color:#fff;border-color:#ff7f50\"><p class=\"st-mybox-title\" style=\"color:#ff7f50;font-weight:bold;text-shadow:#fff 3px 0px 0px, #fff 2.83487px .981584px 0px, #fff 2.35766px 1.85511px 0px, #fff 1.62091px 2.52441px 0px, #fff .705713px 2.91581px 0px, #fff -0.287171px 2.98622px 0px, #fff -1.24844px 2.72789px 0px, #fff -2.07227px 2.16926px 0px, #fff -2.66798px 1.37182px 0px, #fff -2.96998px .42336px 0px, #fff -2.94502px -0.571704px 0px, #fff -2.59586px -1.50383px 0px, #fff -1.96093px -2.27041px 0px, #fff -1.11013px -2.78704px 0px, #fff -0.137119px -2.99686px 0px, #fff .850987px -2.87677px 0px, #fff 1.74541px -2.43999px 0px, #fff 2.44769px -1.73459px 0px, #fff 2.88051px -0.838246px 0px;background:linear-gradient(0deg, #fff 0%, #fff 55%, rgba(0, 0, 0, 0) 55%, rgba(0, 0, 0, 0) 100%)\"><i class=\"st-fa st-svg-lightbulb-o st-css-no\" aria-hidden=\"\"><\/i>\u4f59\u5f26\u5b9a\u7406 \u305d\u306e\u2461<\/p><div class=\"st-in-mybox\">\n<p class=\"has-st-margin-bottom has-st-margin-bottom--1\">\u4f59\u5f26\u5b9a\u7406\u306f\u4ee5\u4e0b\u306e\u5f62\u3067\u3082\u8868\u73fe\u3067\u304d\u308b\uff08\u5f0f\u81ea\u4f53\u306f\u300c\u4f59\u5f26\u5b9a\u7406 \u305d\u306e\u2460\u300d\u3068\u540c\u5024\uff01\uff09\u3002<\/p>\n\n\n\n<p class=\"has-st-margin-bottom has-st-margin-bottom--1\">$$\\begin{aligned}\\cos A&amp;=\\bun{b^2+c^2-a^2}{2bc}\\\\ \\cos B&amp;=\\bun{c^2+a^2-b^2}{2ca}\\\\ \\cos C&amp;=\\bun{a^2+b^2-c^2}{2ab}\\end{aligned}$$<\/p>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u76ee\u6b211 \u6b63\u5f26\u5b9a\u74062 \u6b63\u5f26\u5b9a\u74063 \u4f59\u5f26\u5b9a\u7406 \u6b63\u5f26\u5b9a\u7406 \u6e96\u5099 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