变能守恒原理

礼节美语 Business Etiquette 250 Cell Phone 2

Sue跟坐在隔壁的同事George聊天。 S: That's true...we might actually be making more work for ourselves by this constant need to stay in touch. G: If they allow cell phones on airplanes...we're going to have to hear even more hours of endless

发表于:2018-11-30 / 阅读(99) / 评论(0)

礼节美语

英文杂志-Physics

In the square outside the British Library in London is a sculpture of Sir Isaac Newton - The first man who asked why apples seem always to fall towards the centre of the earth. Maybe they chose it for the spot because it shows a great scientist at wo

发表于:2018-12-07 / 阅读(88) / 评论(0)

英文杂志-Magazine

Albert Einstein

Broadcast: Jan 22, 2003 By Marilyn Christiano VOICE ONE: This is Steve Ember. VOICE TWO: And this is Sarah Long with the VOA Special English program, Explorations. Today we tell about a scientist who

发表于:2018-12-07 / 阅读(88) / 评论(0)

VOA2003（上）-科技导航

电脑模拟能够预测未来地震

Computer Simulations Might Predict Future Earthquakes 电脑模拟能够预测未来地震 Geologists say they knew a large earthquake was coming in South Asia, but they did not know when. The Himalay

发表于:2018-12-08 / 阅读(91) / 评论(0)

VOA2005（下）--环境科学探索

万花筒 2008-06-10&-06-11

Countdown to the Olympics,the Beijing Zoo introduces eight Olympic pandas that will be on display through this summer's games.Visitors waited in long lines to buy tickets to the renovated panda hall at the zoo where the animals will be held in a newl

发表于:2018-12-11 / 阅读(96) / 评论(0)

万花筒2008年

Wild Europe - Genesis 肇始之初- 12

...Africa. The African plate has been drifting north over millions of years. And when it pushes against the European plate, huge fold s of rock have been forced up and over one another into great moun

发表于:2019-01-02 / 阅读(164) / 评论(0)

欧洲自然写真

ECONOMICS REPORT - Work on 'Game Theory' Wins Nobel Prize fo

ECONOMICS REPORT - Work on 'Game Theory' Wins Nobel Prize for Two Economists By Mario Ritter Broadcast: Friday, October 14, 2005 I'm Bob Doughty with the VOA Special English Economics Report. Robert A

发表于:2019-01-02 / 阅读(120) / 评论(0)

健康与经济

SCIENCE IN THE NEWS - Stephen Hawking and Black Holes / Quan

SCIENCE IN THE NEWS - Stephen Hawking and Black Holes / Quantum Theory By Caty Weaver Broadcast: Tuesday, August 17, 2004 VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Bob Dought

发表于:2019-01-07 / 阅读(99) / 评论(0)

科技之光

SSS 2011-12-02

This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Bats see with their ears, which are highly attuned to pick up minute variations in the reflection of the sound pulses they use to echolocate. Here are so

发表于:2019-01-08 / 阅读(114) / 评论(0)

Scientific American(十二)月

EXPLORATIONS – Albert Einstein

EXPLORATIONS – Albert Einstein By Marilyn Christiano Broadcast: Wednesday, February 23, 2005 VOICE ONE: This is Steve Ember. VOICE TWO: And this is Sarah Long with the VOA Special English program, E

发表于:2019-01-28 / 阅读(91) / 评论(0)

Explorations

奇幻、智慧、古老：世界最神秘的八大民族

1. Russians 1、俄罗斯人 Scientists still cannot agree on their origins and answer the question when Russians became Russian. The ancestry of Russians were sought among Normans, Scythians, and Sarmatians, and even the South Siberian Usuns. 俄罗斯

发表于:2019-02-01 / 阅读(68) / 评论(0)

阅读空间

VOA常速英语2008年-Mercury Seen in New Light

By Paul Sisco Washington, DC 15 February 2008 Scientists have started analyzing data and images acquired when the Messenger space probe passed within 200 kilometers of the planet Mercury last month. It was the first flyby of the solar system's inner-

发表于:2019-02-06 / 阅读(132) / 评论(0)

VOA常速英语2008年（二月）

塞卡病毒比埃博拉危害更大

The Zika virus outbreak in Latin America could be a bigger threat to global health than the Ebola epidemic that killed more than 11,000 people in Africa. That's according to several public health experts who spoke with the Guardian and Examiner newsp

发表于:2019-02-08 / 阅读(95) / 评论(0)

英语新闻

TED演讲:宇宙的灭亡(2)

This dark energy doesn't behave like any other substance we know at all and acts more like antigravity force. 这种暗能量的性质与我们所熟知的其他物质完全不同，它更像是反重力。 We say that it has a gravitational pressure

发表于:2019-02-13 / 阅读(59) / 评论(0)

TED演讲教育篇

工程词汇中英文对照

质量合格证书 certification of fitness 原材料 raw material 底板 bottom plate 垫层 cushion 侧壁 sidewall 中心线center line 条形基础 strip footing 附件 accessories 型钢 profile steel 钢板 steel plate 熔渣 slag 飞溅 weldin

发表于:2019-02-15 / 阅读(130) / 评论(0)

实用英语

Step by Step 3000 第2册 Unit5:Creative Minds(3)

Part 3. Scientists of the millennium(2). Keywords. idea, theory, discovery, method, establish, invention, change. Vocabulary. origin, species, by means of, organism, evolution, survive, reproduce, microorganism, Pasteurization, germ, resistance, inje

发表于:2019-02-15 / 阅读(94) / 评论(0)

Step by Step 3000 第二册

夏说英语新闻晨读第49期:寨卡病毒肆虐美洲

本期内容： The World Health Organisation warned that Zika, a mosquito-borne virus linked to brain deformation in human fetuses, is likely to spread to every country in the Americas except Canada and Chile. Brazil has reported 3,893 cases of micr

发表于:2019-02-20 / 阅读(84) / 评论(0)

夏说英语新闻晨读

万物简史第246期:马斯特-马克的夸克(18)

This is counter to all expectations. It appears that the universe may not only be filled with dark matter, but with dark energy. Scientists sometimes also call it vacuum energy or, more exotically, quintessence. Whatever it is, it seems to be driving

发表于:2019-02-25 / 阅读(97) / 评论(0)

万物简史

英语单词快速记忆法丛书（2）

发表于:2019-02-26 / 阅读(418) / 评论(0)

英文语法词汇

英语听力文摘 English Digest 261、热是一种运动？

The Heat Is On 热传递，是热从温度高的物体传到温度低的物体，或者从物体的高温部分传到低温部分的过程。热传递是自然界普遍存在的一种自然现象。只要物体之间或同一物体的不同部分之间

发表于:2019-03-09 / 阅读(111) / 评论(0)

英语听力文摘 English Digest

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accessory sample

accumulation reproducer