un. 海水淡化
[网络] 海水转化淡水

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(338) / 评论(0) 分类 新概念优美背诵短文50篇

[00:03.20]Unit 7 The Sea Lesson 3 The Sea World [00:07.92]UNDERwater WORLD [00:10.16]The Best Plance To See Sea Creatures [00:13.62]Polar World [00:15.75]We have polar bears and a real iceberg too! [00:19.45]You can only see a small part of it [00:21

发表于:2018-12-04 / 阅读(393) / 评论(0) 分类 北师大版高中英语模块3

Scientists at the Massachusetts Institute of Technology (MIT) have created what could be a breakthrough in providing clean, alternative energy. Researchers have invented an artificial leaf that splits water into hydrogen and oxygen and stores the ene

发表于:2018-12-07 / 阅读(184) / 评论(0) 分类 创新英语

A salty breeze blew into the tree house. Seagullsscreeched overhead. Jack and Annie looked out thetree house window. They were high in the branches of a gnarled oldtree. The tree was on a sea cliff beneath snowcappedmountains. The mountains overlooke

发表于:2018-12-10 / 阅读(110) / 评论(0) 分类 汪培珽儿童英文分级书单《神奇树屋》

THIS IS AMERICA - Playing in the Sun and Sea at Martha's Vineyard and Nantucket BARBARA KLEIN: Welcome to THIS IS AMERICA in VOA Special English. I'm Barbara Klein. This week on our program, we tell you about two islands in Massachusetts, in the New

发表于:2018-12-16 / 阅读(105) / 评论(0) 分类 2011年VOA慢速英语(七)月

Voice 1 Welcome to Spotlight. Im Liz Waid. Voice 2 And Im Robin Basselin. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 3 Over 60% of our planet is covere

发表于:2018-12-19 / 阅读(129) / 评论(0) 分类 环球英语 Spotlight

Voice 1 Welcome to Spotlight. Im Anne Muir. Voice 2 And Im Bruce Gulland. Spotlight uses a special English method of broadcasting. It is easier for people to understand - no matter where in the world they live. Voice 1 Aurlie Spadone knows all about

发表于:2018-12-19 / 阅读(123) / 评论(0) 分类 环球英语 Spotlight

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:2018-12-30 / 阅读(152) / 评论(0) 分类 考研背诵50篇

At the Edge of the Sea The shore is an ancient world, for as long as there has been an earth and se a there has been this place of the meeting of land and water. Yet it is a world that keeps alive the sense of continuing creation and of the relentle

发表于:2018-12-31 / 阅读(199) / 评论(0) 分类 英语名著名段背诵精华

太阳能电池板能通过自发电脉冲震落其灰尘,以确保最大限度的获得光照。 Imagine giant fields filled with photovoltaic solar panels, soaking up rays. The best spots to put such panels are obviously sunny, with little rain.

发表于:2019-01-02 / 阅读(148) / 评论(0) 分类 60秒科学

Mars Rover Finds Evidence of Ancient Sea David McAlary The U.S. space agency NASA says Mars once had a shallow, salty sea that could have supported life. The evidence has come from chemical and physic

发表于:2019-01-04 / 阅读(116) / 评论(0) 分类 VOA2004(上)--各类新闻

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 s

发表于:2019-01-08 / 阅读(142) / 评论(0) 分类 英语小短文

Shanghai Takes Measures against Rising Sea Levels Zhang Zhenyu, of the Shanghai Flood Risk Information Center spokesperson, said the seawalls virtually encircle half of the city. These are all the sea walls we have built, including from Hangzhou Bay

发表于:2019-01-19 / 阅读(137) / 评论(0) 分类 2015CRI中国国际广播电台

Ever wonder how they determine how many calories are in food? Yael and Don explain it in this Moment of Science. Y: All right, Don. What are you doing? D: I'm using a bomb calorimeter to figure out how many calories are in my lunch. See, I put my san

发表于:2019-02-15 / 阅读(128) / 评论(0) 分类 英语时差8,16

LOS ANGELES, April 18 (Xinhua) -- Sugarcane(甘蔗) has the effect of cooling temperatures(温度) , thus playing role in stemming global warming, a new study has found. Sugarcane does so by reflecting sunlight back into space and by lowering the

发表于:2019-02-18 / 阅读(119) / 评论(0) 分类 英语新闻

Did you know that enough sunlight falls on the earths surface every minute to provide energy for the entire world? The trick, though, is turning sunlight into power we can use for things like heating water and making electricity. And there are two ty

发表于:2019-02-23 / 阅读(109) / 评论(0) 分类 英语时差8,16

Part 6 The Old Man and the Sea 第六部分 老人与海 The sun rose thinly from the sea and the old man could see the other boats, low on the water and well in toward the shore, spread out across the current. Then the sun was brighter and the glare

发表于:2019-02-25 / 阅读(108) / 评论(0) 分类 双语有声阅读

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 s

发表于:2019-02-25 / 阅读(190) / 评论(0) 分类 双语有声阅读

Voice 1 Welcome to Spotlight. Im Liz Waid. Voice 2 And Im Robin Basselin. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 3 Over 60% of our planet is covere

发表于:2019-03-04 / 阅读(434) / 评论(0) 分类 环球英语 Spotlight

Voice 1 Welcome to Spotlight. Im Anne Muir. Voice 2 And Im Bruce Gulland. Spotlight uses a special English method of broadcasting. It is easier for people to understand - no matter where in the world they live. Voice 1 Aurlie Spadone knows all about

发表于:2019-03-04 / 阅读(192) / 评论(0) 分类 环球英语 Spotlight
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until the last moment
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