不稳定性中子

太阳科普第9期

Plasmas I always like to think of as being like naughty children. 我一直觉得电浆就像调皮的小孩 They're full of energy and they are, 充满了能量，随时随地都想捣蛋 want to misbehave and it's ourjob to try 我们的工作就是

发表于:2018-12-07 / 阅读(198) / 评论(0)

太阳科普

TED演讲:原子究竟有多小?(2)

So if you popped open the blueberry and were searching for the nucleus 如果你在蓝莓的内部搜索原子核，结果是一无所获。 You know what? It would be invisible. It's too small to see! 知道为什么吗？因为我们看不到它！它

发表于:2018-12-08 / 阅读(139) / 评论(0)

TED演讲教育篇

TED演讲:原子究竟有多小?(1)

You probably already know everything is made up of little tiny things called atoms 你也许已经知道所有的东西都是由微小的原子组成。 You might even know that each atom is made up of even smaller particles called protons, neutrons

发表于:2018-12-08 / 阅读(133) / 评论(0)

TED演讲教育篇

经济学人07:Turning a line 化学元素即将出现新的一行

Science and Technolgy. 科技。 Modern alchemy. 现代炼金术。 Turning a line. 进入新的一行。 The race to extend the periodic table continues. 扩展元素周期表的比赛仍在继续。 ONE of the first inklings that chemistry has an u

发表于:2018-12-31 / 阅读(230) / 评论(0)

经济学人科技系列

SSS 2009-06-08

This is Scientific American's 60-second Science, I'm Steve Mirsky. Got a minute? Back on January 15th, US Airways Flight 1549 made that amazing water landing in the Hudson after both engines were taken out by Canada geese, which can weigh eight pound

发表于:2019-01-08 / 阅读(155) / 评论(0)

Scientific American(六)月

SSS 2010-02-04

Some people of Italian ancestry, like me, might have a surprise in the family treea man of east Asian descent, who was living and working 2,000 years ago in the boondocks near the heel of the Italian boot. The discovery is the first good evidence of

发表于:2019-01-08 / 阅读(157) / 评论(0)

Scientific American(二)月

听歌学英语：What You Made-Lizzy Wang

Two hearts beating together 两颗心跃动相同的频率 Two bodies just one soul in search of each other 栖息在两个躯体的同一灵魂寻求彼岸的共鸣 They said it couldnt happen 人们都说这不可能成真 But we broke all the odds

发表于:2019-01-10 / 阅读(141) / 评论(0)

听歌学英语

全球股市下跌,中国经济担忧增加

AS IT IS 2015-08-25 Global Markets Fall as China Economic Fears Rise 全球股市下跌,中国经济担忧增加 Stock market shares in China fell sharply early Monday. The Shanghai Composite dropped 8.5 percent, marking the sharpest fall China has s

发表于:2019-01-12 / 阅读(145) / 评论(0)

2015年VOA慢速英语(八)月

NPR边听边练67:白宫加紧讨论枪支暴力问题

以下段落是摘自新闻里的一些重要信息,并不是一个段落的听写。空内信息可在本新闻中全部找到,大家可以根据这些信息复述新闻。一、泛听建议： 1、完整听一遍，掌握大意。 2、继续听，特

发表于:2019-01-22 / 阅读(130) / 评论(0)

NPR边听边练

生活大爆炸第三季第十四集_2

我数三下一 I'm going to count to three. One... 哦好吧 Oh,all right. 你的手段真是太高明了 That was amazing how you handled him. 我知道怎么对付不听话的小孩 I know how to deal with stubborn children. 我妈以前在我家地

发表于:2019-01-28 / 阅读(119) / 评论(0)

生活大爆炸第三季

万物简史第147期:基本物质(19)

The structure of atoms and the significance of protons will come in a following chapter, so for the moment all that is necessary is to appreciate the organizing principle: hydrogen has just one proton, and so it has an atomic number of one and comes

发表于:2019-01-29 / 阅读(136) / 评论(0)

万物简史

万物简史第17期:如何营造一个宇宙(9)

The eventual result was the inflation theory, which holds that a fraction of a moment after the dawn of creation, the universe underwent a sudden dramatic expansion. It inflatedin effect ran away with itself, doubling in size every 10-34seconds. The

发表于:2019-01-29 / 阅读(132) / 评论(0)

万物简史

美丽新世界Brave New World 第17章(8)

You'd have a reason for chastity! said the Savage, blushing a little as he spoke the words. 你们有理由需要贞操！野蛮人说，说时有点脸红了。 But chastity means passion, chastity means neurasthenia. 但是贞操意味着激情，意

发表于:2019-01-29 / 阅读(127) / 评论(0)

美丽新世界

VOA常速英语2007年-Experts: Instability in Iran, Iraq Threatens Gu

By Mil Arcega Washington 03 December 2007 A panel of oil experts, including an ambassador from a producing nation, warned this week growing militancy in the Middle East poses a threat to world oil markets. The forum, hosted by a conservative think ta

发表于:2019-02-02 / 阅读(143) / 评论(0)

VOA常速英语2007年（十二月）

托福考试：TOEFL模拟试题

Questions 12-20 The elements other than hydrogen and helium exist In such small quantities that it is accurate to say that the universe somewhat more than 25 percent helium by weight and somewhat less than 25 percent hydrogen. Astronomers have measur

发表于:2019-02-05 / 阅读(179) / 评论(0)

托福英语

经济学人:明斯基的繁荣孕育泡沫破裂之种子(下)

To Minsky, this was an unfair and naive representation of Keynes's subtle and sophisticated views. 对于明斯基而言，这是对凯恩斯的精妙且成熟的观点的一种不公平且天真的表述。 Minsky's financial-instability hypothesis

发表于:2019-02-17 / 阅读(117) / 评论(0)

经济学人财经系列

万物简史第235期:马斯特-马克的夸克(7)

The charged pion and antipion decay respectively into a muon plus antineutrino and an antimuon plus neutrino with an average lifetime of 2.603 x 10-8 seconds, the neutral pion decays into two photons with an average lifetime of about 0.8 x 10-16 seco

发表于:2019-02-17 / 阅读(149) / 评论(0)

万物简史

万物简史第203期:威力巨大的原子(17)

Meanwhile the tireless Rutherford, now back at Cambridge as J. J. Thomson's successor as head of the Cavendish Laboratory, came up with a model that explained why the nuclei didn't blow up. He saw that they must be offset by some type of neutralizing

发表于:2019-02-17 / 阅读(150) / 评论(0)

万物简史

万物简史第277期:砰!(12)

This involved bombarding samples with neutrons in a small nuclear reactor and carefully counting the gamma rays that were emitted; 这项技术包括在一个小型核反应堆里用中子轰击样品，仔细计算释放出来的射线。 it was ext

发表于:2019-02-25 / 阅读(214) / 评论(0)

万物简史

万物简史第198期:威力巨大的原子(12)

Let us pause for a moment and consider the structure of the atom as we know it now. Every atom is made from three kinds of elementary particles: protons, which have a positive electrical charge; electrons, which have a negative electrical charge; and

发表于:2019-02-25 / 阅读(214) / 评论(0)

万物简史

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