单词：trigonometric tangent
三角正切
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It's been tried all over the world, and teachers sort of stand back and say, It just happens by itself? 在世界各地尝试过，老师们后退着说：它就这么自己发生了？ And I said, Yeah, it happens by itself.How did you know that? 我说
发表于:2018-12-19 / 阅读(74) / 评论(0)
TED演讲教育篇
TED演讲教育篇
It sucks. In certain circumstances, it might be the right thing to pull a talk. 这真不怎么样。有时候，要求取消某个讲话的理由是正确的 But it seems most of the time its overreactions by security vendors who dont understand. It
发表于:2018-12-28 / 阅读(67) / 评论(0)
创业成功人士访谈录
创业成功人士访谈录