标签：mantle 相关文章

托福听力短文 I-05-3

(man) I'm glad you brought up the question of our investigations into the makeup of the Earth's interior. In fact --- since this is the topic of your reading assignment for next time --- let me spend these last few minutes of class talking about it.

发表于:2018-12-05 / 阅读(77) / 评论(0) 分类 托福听力短文

美联社新闻一分钟 2008-05-31

1. Hundreds of children taken from a polygamous compound may be reunited with their families as soon as Monday. It comes on the heels of a Texas court rulling that state officials went too far when they took the kids from the ranch. 2. A constructio

发表于:2018-12-15 / 阅读(163) / 评论(0) 分类 美联社新闻一分钟2008年(五)月

SSS 2008-09-30

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. The Earths crust is old. Billions of years old. So old that its nearly impossible to imagine. And now scientists have discovered what may be the oldest

发表于:2018-12-24 / 阅读(88) / 评论(0) 分类 Scientific American(九)月

SSS 2009-04-13

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. The Earths original atmosphere would have been unpleasantdeadly in factto any organisms that breathe oxygen. There wasnt any. Not until about 2.4 billi

发表于:2018-12-24 / 阅读(70) / 评论(0) 分类 Scientific American(四)月

国家地理:Octopus Mating 章鱼交配

OK, we are back in the world of the Cyanea octopus. It's mating time. Here's your potential conquest. She doesn't know you're alive. She's too busy cleaning trash from her house. Now you are the perceptive type. You use your sensitive disks for any s

发表于:2018-12-30 / 阅读(97) / 评论(0) 分类 国家地理2007年

SSS 2011-01-10

This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? The Apollo moon missions ended almost 40 years ago. But for lunar scientists, they're gifts that keep on giving. Researchers studying rocks brought back by ast

发表于:2019-01-08 / 阅读(89) / 评论(0) 分类 Scientific American(一)月

NPR 2010-07-12

BP says it's making progress today on an undersea operation to install a new containment cap on its blown-out well in the Gulf of Mexico. Yesterday, the company removed a cap as part of a plan to place a tighter-fitting cover over the well that can c

发表于:2019-01-08 / 阅读(70) / 评论(0) 分类 2010年NPR美国国家公共电台7月

埃菲尔铁塔或变世界最大“绿树”

大名鼎鼎的埃菲尔铁塔明年可能变身为世界上最大的绿树。媒体日前披露了一项被评价为疯狂的计划：用60万株植物装饰这座巴黎乃至法国最富盛名的地标性建筑。此项大胆的计划由法国京吉尔

发表于:2019-01-16 / 阅读(97) / 评论(0) 分类 阅读空间

雅思阅读中的词义猜测

如果随便翻阅雅思阅读真题，我们常常会发现它涉及的词汇广度难度绝对不容小觑，甚至出现在GRE红宝书里的超强词汇也会频频亮相。于是，不少同学在初识雅思时都会产生畏难情绪，滋生出

发表于:2019-01-17 / 阅读(121) / 评论(0) 分类 实用英语

经济学人110:地球上所有碳的秘密的项目

Technology Going underground 科技 去地球深处 A project to reveal more about all the carbon on Earth 一个将会揭示更多关于地球上所有碳的秘密的项目 THE carbon cycle is the stuff of school books. 碳的循环在学校教科书中

发表于:2019-01-26 / 阅读(67) / 评论(0) 分类 经济学人科技系列

小王子 第24期:君主至上

That frightens me... I cannot, any more... murmured the little prince, now completely abashed. 这倒叫我有点紧张我打不出哈欠来了小王子红着脸说。 Hum! Hum! replied the king. Then I I order you sometimes to yawn and sometimes to 嗯

发表于:2019-01-29 / 阅读(148) / 评论(0) 分类 小王子

人类在地幔中找燃料

人类在地幔中找燃料 DIGGING in dirt and rock is big business． If you dig deep enough， with luck， you will strike oil or gas， which are used as our main sources of fuel and energy．Until now， we have only explored the Earth's outer

发表于:2019-02-03 / 阅读(68) / 评论(0) 分类 阅读空间

前西德总理施密特逝世

Helmut Schmidt, the former West German chancellor who steered his country through the world economic crisis and cold war tension of the 1970s and early 1980s has died at the age of 96. 前西德总理、在上世纪70年代至80年代初带领国家挺

发表于:2019-02-04 / 阅读(56) / 评论(0) 分类 英语新闻

地球白天时间越来越长 670万年增加1分钟

Earth's days are getting longer but you're not likely to notice any time soon it would take about 6.7 million years to gain just one minute, according to a study published last Wednesday. 据上周三公布的一份报告显示，地球的白天时间正

发表于:2019-02-16 / 阅读(70) / 评论(0) 分类 英语新闻

经济学人320:国会选举 在职者连任

Congressional elections 国会选举 Immovable incumbents 在职者连任 The Republican primaries have produced fewer upsets than expected 共和党竞选并没有想象中那么让人失望 JUSTIN AMASH, a congressman, represents one of the most co

发表于:2019-02-17 / 阅读(71) / 评论(0) 分类 经济学人文艺系列

万物简史 第307期:地下的烈火(15)

So how much do we know about what's inside the Earth? Very little. 因此说，我们对地球的内部情况究竟了解多少？很少。 Scientists are generally agreed that the world beneath us is composed of four layers, 科学家们普遍认为，

发表于:2019-02-25 / 阅读(72) / 评论(0) 分类 万物简史

万物简史 第306期:地下的烈火(14)

Because we can't see into the Earth, we have to use other techniques, which mostly involve reading waves as they travel through the interior. 我们无法看到地球的深处，因此不得不使用别的方法，主要包括观察波在地球内部的

发表于:2019-02-25 / 阅读(92) / 评论(0) 分类 万物简史

万物简史 第298期:地下的烈火(6)

He had discovered the boundary between the crust and the layer immediately below, the mantle; 他发现地壳与下面一层即地幔的界线， this zone has been known ever since as the Mohorovicic discontinuity, or Moho for short. 此后，这个区

发表于:2019-02-25 / 阅读(66) / 评论(0) 分类 万物简史

英语听书《白鲸记》第346期

If, then, to meanest mariners, and renegades and castaways, I shall hereafter ascribe high qualities, though dark; weave round them tragic graces; 那么,如果我以后将把高尚的品质(虽然并不明显)归之于那些最卑贱的水手。背教

发表于:2019-03-10 / 阅读(147) / 评论(0) 分类 白鲸记

分析GRE阅读中的难句难词

现在，我们拿GRE阅读NO题的NO8-1这篇文章做一个示范，来说明一下怎样提高新GRE阅读能力。 NO8-1，我们从词--句--篇章来谈谈这篇文章。 原文： Geologists have long known that the Earths mantle is heterogene

发表于:2019-03-11 / 阅读(132) / 评论(0) 分类 GRE英语
最新学习文章
热门学习文章