[机] 生物渗透(现象)

This is Scientific Americans 60 - Second Science, I am Karen Hopkin, this will just take a minute. After a long bath, your fingers and toes come out all wrinkly. You may have wondered why your skin would go and do such a thing. Now a study shows that

发表于:2018-12-24 / 阅读(44) / 评论(0) 分类 Scientific American(一)月

By Mario Ritter Broadcast: October 28, 2003 This is Steve Ember with the VOA Special English Agriculture Report. Farmers have long put animal waste on their fields. They may also use human waste. Mode

发表于:2019-01-02 / 阅读(73) / 评论(0) 分类 VOA2003(下)-农业与经济

Osmosis 渗透作用 When you water plants or flowers, do you pour water on their leaves? 你给植物或花浇水时,会把水倒在它们的叶子上吗? No, you don't. You may pour water on the ground. 不,你不会。你可能把水倒在地上

发表于:2019-01-10 / 阅读(46) / 评论(0) 分类 与美国小学生一起学英文第12册

Researchers in Sydney are leading a new international effort to make desalination more environmentally friendly. Current techniques tend to use excessive amounts of energy or are heavily reliant on chemicals. The University of Technology in Sydney is

发表于:2019-02-06 / 阅读(48) / 评论(0) 分类 英语新闻

迷你对话: A: Mary is really a diligent girl. 玛丽是一个勤奋的女孩。 B: What do you mean? 为什么这么说? A: She learns to speak Latin by osmosis within three months. 她废寝忘食地在三个月内学会了拉丁语。 B: She

发表于:2019-02-15 / 阅读(52) / 评论(0) 分类 迷你对话学地道口语

Leave it on the shelf too long and honey begins to crystallize. Heating the honey returns it to its original condition, but if you add water, you could ruin the honey completely. Thats because honey, which is a preservative in its original state, fer

发表于:2019-02-18 / 阅读(31) / 评论(0) 分类 英语时差8,16