number song 1, 2, 3, 4, 5, 6, 7 that's the way to start 8, 9, 10, 11, 12 you'll learn them all by heart 13, 14, 15, 16 they're the next along 17, 18, 19, 20 that's the number song 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

发表于:2018-11-29 / 阅读(146) / 评论(0) 分类 优美儿童英语歌曲

Now, back to the mole. Not that mole. 现在,回到摩尔,不是鼹鼠。 This mole. Yep, this number has a second name.The mole. 这个摩尔,没错,这个常数有另一个名字,摩尔. Chemists use the term mole to refer to the quantities

发表于:2018-12-18 / 阅读(37) / 评论(0) 分类 TED演讲教育篇

Recycling Plastics When plastic containers are recycled, they are first cleaned, then ground into tiny pellets and put into a flotation tank. This separates out the various plastic resins from other waste material. Once they are separated out, the pl

发表于:2018-12-27 / 阅读(50) / 评论(0) 分类 英语时差8,16

Science and Technology Cancer and obesity Malignant flab 科技 癌症与肥胖 恶性松弛 At last, an understanding of how overeating causes cancer 吃得过多如何导致癌症 OVERWEIGHT women are more likely to develop breast cancer than lean

发表于:2019-01-26 / 阅读(42) / 评论(0) 分类 经济学人科技系列

An unusual method for producing antibiotics may help to solve an urgent global problem: the rise in infections that resist treatment with commonly used drugs, and the lack of new antibiotics to replace ones that no longer work. 耐受常用药物治疗

发表于:2019-02-06 / 阅读(30) / 评论(0) 分类 阅读空间

What was actually interesting to us was not that the bacteria made light, but when the bacteria made light. 事实上,我们感兴趣的部分并不是细菌会不会发光,而是细菌何时发光。 What we noticed is when the bacteria were alo

发表于:2019-03-04 / 阅读(98) / 评论(0) 分类 TED演讲教育篇