原内胚层细胞

Aztecs 远古的回响 -- Aztecs帝国 4

In this remarkable story we see not only the idea of Teotihuacan as the primordial origin of the Aztec sun, we also see the participation of the gods and their self-sacrifice so that human life can th

发表于:2018-12-07 / 阅读(173) / 评论(0)

远古的回响

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(111) / 评论(0)

Scientific American(四)月

英语听力暮光之城•暮色第260期:第十五章卡伦一家(9)

That's right, I answered immediately, hiding my surprise at his casual use of the word. 没错。我立刻答道，掩饰着自己对他漫不经心地用着这个词的惊讶。 He shook his head. You're incredible. 他摇了摇头：你简直难以置

发表于:2018-12-26 / 阅读(105) / 评论(0)

暮光之城•暮色

2007-09-06, Coral Reef Erotica 神奇的珊瑚礁

You may think you are gazing upon a sleepy coral reef in the Caribbean Sea, and of course you are. But hiding in plain sight, is a riving teeming hotbed of erotica , that makes a Hollywood hot up party seem like a trip to the dentist. This is a coral

发表于:2018-12-30 / 阅读(198) / 评论(0)

国家地理2007年

万物简史第3期:引言(3)

So thank goodness for atoms. 所以，谢天谢地，有了原子。 But the fact that you have atoms and that they assemble in such a willing manner is only part of what got you here. 不过，有了原子，它们心甘情愿地聚集在一起，这只

发表于:2019-01-01 / 阅读(160) / 评论(0)

万物简史

TED演讲:科技并没有改变爱为什么?(8)

Along with this, we see a rise of a host of beliefs: 不仅如此，各种信仰开始传播： the belief of virginity at marriage, arranged marriages -- strictly arranged marriages 坚信婚前必须保持处女身，包办婚姻（严格安排的婚

发表于:2019-01-03 / 阅读(109) / 评论(0)

TED演讲科技篇

SSS 2008-10-17

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. In 1953 a student named Stanley Miller did an experiment showing that the simple chemicals present on the early Earth could give rise to the basic buildi

发表于:2019-01-08 / 阅读(136) / 评论(0)

Scientific American(十)月

SSS 2009-09-17

The early Earths oceans were home to a lot of interesting chemistry. Now scientists have found that amino acids thought to be present way back when could have been cooked into other compounds vital for lifean idea you should take with a grain of salt

发表于:2019-01-08 / 阅读(116) / 评论(0)

Scientific American(九)月

GRE优秀作文赏析：科学的作用

题目： The function of science is to reassure; the purpose of art is to upset. Therein lies the value of each. 科学的作用是解惑;艺术的目的是创新。只有这样他们才各得其所。正文： Science and art are two of the most g

发表于:2019-01-08 / 阅读(110) / 评论(0)

GRE作文

经济学人154:爱在潜逃路惊悚小说也催泪

Love on the lam 爱在潜逃路 A rare thing: a deeply moving thriller 奇葩：惊悚小说也催泪 Schroder. By Amity Gaige. 《父亲的罪》作者艾米蒂盖奇 ERIC is the unlikeliest of characters to charm a reader. His life is a tabloid dra

发表于:2019-01-27 / 阅读(95) / 评论(0)

经济学人文艺系列

重归混沌 (The Return to Chaos)

Let us return to original chaos! 让我们重归于元始的混沌！ Let us imagine the primordial din, the original vortex! 让我们臆想那本初的喧嚣、元始的漩涡！ Let us throw ourselves into the whirlwind which has preceded the crea

发表于:2019-02-01 / 阅读(161) / 评论(0)

实用英语

Researchers make sperm from stem cell in dish

WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo

发表于:2019-02-04 / 阅读(297) / 评论(0)

英语新闻

中国建造世界最高重力波望远镜

They were proposed almost exactly 100 years ago by Albert Einstein based on his theory of general relativity but it was only in February 2016 that scientists proved the existence of gravitational waves. And now China is starting work on the worlds hi

发表于:2019-02-06 / 阅读(145) / 评论(0)

英语新闻

经济学人185:天文学宇宙中的摇滚乐

Science and technology 科学技术 Astronomy 天文学 The cosmic boogie-box 宇宙中的摇滚乐 The sky, it seems, is filled with unexpected radio signals 看上去，太空中充满了我们意想不到的无线电讯号 WHISPER it not, but doin

发表于:2019-02-06 / 阅读(104) / 评论(0)

经济学人科技系列

GRE issue高频科技类满分范文

发表于:2019-02-09 / 阅读(133) / 评论(0)

GRE作文

GRE写作范文：科学的作用

GRE优秀作文：科学的作用。GRE频道小编为同学们整理了GRE优秀作文：科学的作用，供同学们参考使用，希望对同学们的gre 考试有所帮助，下面和小编一起来看看吧：题目： The function of scienc

发表于:2019-02-09 / 阅读(126) / 评论(0)

GRE作文

英语PK台第315期:奥运新闻之耿直洪荒girl

Olympic swimmer makes huge splash in China's live-streaming world 奥运游泳运动员在线直播激起千层浪，泳坛逗比小花，耿直洪荒girl，傅爷火了！ Chinese Olympic swimmer Fu Yuanhui has cemented her unexpected stardom by bre

发表于:2019-02-16 / 阅读(117) / 评论(0)

英语PK台

经济学人:天体物理尘归尘土归土

Astrophysics 天体物理 Dust to dust 尘归尘，土归土 A dramatic recent discovery in physics is looking rather dodgy 近期，物理学中的一项戏剧性发现看上出非常模糊 IN MARCH Chao-Lin Kuo, an astrophysicist at Stanford Univer

发表于:2019-02-16 / 阅读(141) / 评论(0)

经济学人科技系列

万物简史第467期:生命在前进(9)

The Burgess Shale included a range of disparity in anatomical designs never again equaled, 布尔吉斯页岩化石所包含的横剖面的花色范围是独一无一的， and not matched today by all the creatures in the world's oceans, Gould wrote

发表于:2019-02-17 / 阅读(150) / 评论(0)

万物简史

万物简史第417期:生命的起源(11)

Fred Hoyle and his colleague Chandra Wickramasinghe further eroded enthusiasm for panspermia 我们已经在第三章里提到，弗雷德霍伊尔和他的同事钱德拉威克拉马辛格认为， by suggesting that outer space brought us not only

发表于:2019-02-17 / 阅读(104) / 评论(0)

万物简史

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