标签：海水是咸的 相关文章

新东方优美背诵短文50篇 Unit39:The Salinity of Ocean Waters

If the salinity of ocean waters is analyzed, it is found to vary only slightly from place to place. Nevertheless, some of these small changes are important. There are three basic processes that cause a change in oceanic salinity. One of these is the

发表于:2018-11-28 / 阅读(277) / 评论(0) 分类 新概念优美背诵短文50篇

新东方优美背诵短文50篇 Unit44:Obtaining Fresh water from icebergs

44.Obtaining Fresh water from icebergs The concept of obtaining fresh water from icebergs that are towed to populated areas and arid regions of the world was once treated as a joke more appropriate to cartoons than real life. But now it is being con

发表于:2018-11-28 / 阅读(435) / 评论(0) 分类 新概念优美背诵短文50篇

英语听力文摘 English Digest 229、夏天的风

Summer Breeze, Makes Me Feel Fine 风是大家最熟悉的自然现象，要了解风的形成必须了解包围着地球的大气的运动。大气的流动也像水流一样是从压力高处往压力低处流。太阳能正是形成大气压差的原

发表于:2019-03-09 / 阅读(194) / 评论(0) 分类 英语听力文摘 English Digest

英语听力文摘 English Digest 235、海洋死区

Dead Zones in the Ocean 所谓海洋死区是指由于海水富营养化日益严重，导致海水中含氧量减少，鱼类等生物无法生存的区域。科学家介绍，人类过量使用化肥、大量生活垃圾、车辆和工厂排放的废

发表于:2019-03-09 / 阅读(185) / 评论(0) 分类 英语听力文摘 English Digest
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