标签：equilibrium 相关文章

VOA常速英语2014--美国海军实验室成功将海水转变成燃料

US Navy Lab Turns Seawater Into Fuel 美国海军实验室成功将海水转变成燃料 For centuries, alchemists have tried to turn lead into gold. That transmutation has long been proven impossible, but another similar dream - turning water into f

发表于:2018-12-08 / 阅读(56) / 评论(0) 分类 VOA标准英语2014年(五月)

英语听力：自然百科 World Food in Crisis 粮食危机搅动世界

Its being called the worlds worst food crisis since the 1970s. Around the globe, food prices have risen about 40% in the last year, sparking protests and violence in at least 14 countries, and pushing the problem to center stage at the United Nations

发表于:2019-01-22 / 阅读(52) / 评论(0) 分类 自然百科2008年

英语听力文摘 English Digest 462、食盐大战冰块

Salt vs. Ice 食盐大战冰块 Y: Why does salt melt ice? D: It lowers the melting and freezing point of water. Y: Oh,OK.Wait,I don't get it. Doesn't that mean the salt make ice colder? D: Let me explain.Pure water freezes at thirty-two degrees Fahr

发表于:2019-01-26 / 阅读(67) / 评论(0) 分类 英语听力文摘 English Digest

英语听力文摘 English Digest 166、Why Mountains Stop Growing

If you live up in the mountains, understanding the continually shifting landscape can mean survival. Mountains are continually shifting. Erosion wears mountains down, but active mountain ranges are also continuously rising. And heres the interesting

发表于:2019-02-24 / 阅读(71) / 评论(0) 分类 英语听力文摘 English Digest

英语听力文摘 English Digest 170、永别了，芝加哥

Although it is devastating to find out that Chicago is sinking, were only talking one millimeter a year. Thats four inches in a century, but only until the land in North America brings itself back into equilibrium. When glaciers covered Canada and th

发表于:2019-02-24 / 阅读(58) / 评论(0) 分类 英语听力文摘 English Digest

英语听力文摘 English Digest 224、电线上的小鸟 Bird on a Wire

Bird on a Wire 当我们行走在马路上时，经常可以看到成群的麻雀或乌鸦停落在几万伏的高压电线上，它们不仅不会触电，而且一个个显得悠闲自得。可是，你也知道，如果有人不小心碰到高压线

发表于:2019-02-24 / 阅读(109) / 评论(0) 分类 英语听力文摘 English Digest
最新学习文章
热门学习文章