Chrome，
QQ浏览器
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![三角形的四心与平面向量，学会这些，得分轻而易举[高一春季3]](//imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F572a09145d72f54f91c7094ba237ace7e189c670.jpg%40672w_378h_1c_%21web-search-common-cover)
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播放：23 时间：2024-06-19简介： -
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播放：16 时间：2024-06-19简介： -
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![平面向量的最值问题，居然需要基本不等式？[高一春季2]](//imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F6330838054c91960cca3ee0e1cd66d7288a6fa5f.jpg%40672w_378h_1c_%21web-search-common-cover)
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![三角形的四心与平面向量，学会这些，得分轻而易举[高一春季3]](http://imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F572a09145d72f54f91c7094ba237ace7e189c670.jpg%40672w_378h_1c_%21web-search-common-cover)
![平面向量的最值问题，居然需要基本不等式？[高一春季2]](http://imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F6330838054c91960cca3ee0e1cd66d7288a6fa5f.jpg%40672w_378h_1c_%21web-search-common-cover)
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