发表于:2018-12-01 / 阅读(81) / 评论(0) 分类 Words & Their Stories

[ti:0] [ar:0] [al:0] [by:0] [offset:0] [00:00.00]Useful expressions常用表达法 [00:02.56]Unit 4第四单元 [00:04.30]Is she in the living room?她在客厅里吗? [00:08.32]No, she isn't.不,她不在。 [00:11.89]Where are the keys?钥匙在哪

发表于:2018-12-12 / 阅读(46) / 评论(0) 分类 人教版PEP英语(2013版) 四年级

[ti:0] [ar:0] [al:0] [by:0] [offset:0] [00:00.00]Useful expressions常用表达法 [00:03.00]Unit 2第二单元 [00:04.83]What's in your schoolbag?你书包里有什么? [00:08.56]An English book, a maths book, [00:13.09]three storybooks and... [00

发表于:2018-12-12 / 阅读(42) / 评论(0) 分类 人教版PEP英语(2013版) 四年级

[ti:0] [ar:0] [al:0] [by:0] [offset:0] [00:00.00]Useful expressions常用表达法 [00:03.16]Unit 3第三单元 [00:04.55]What's his name?他叫什么名字? [00:08.68]His name is Zhang Peng.他叫张鹏。 [00:13.90]He's tall and strong.他又高又

发表于:2018-12-12 / 阅读(34) / 评论(0) 分类 人教版PEP英语(2013版) 四年级

A couple of years ago when I was attending the TED Conference in Long Beach, 几年前我参加在长滩TED会议的时候, I met Harriet. 我遇到了哈里特。 We'd actually met online before not the way you're thinking. 实际上我们以前在网

发表于:2019-01-03 / 阅读(45) / 评论(0) 分类 TED演讲科学篇

分集介绍:指数,log,对数微分;双曲函数 Exponential.and.log.Logarithmic.differentiation;.hyperbolic.functions

发表于:2019-01-05 / 阅读(335) / 评论(0) 分类 麻省理工学院公开课:单变量微积分