标签：水和酒精分子 相关文章

AP美联社一分钟新闻(2010-01-25)

1. Hundreds more US troops have landed in Haiti determined to help the homeless caused by the massive earthquake. The forces hoping to bring a lot of jammed supplies, which have been donated there but the jets may be distributed. 2. More UN forces we

发表于:2018-12-15 / 阅读(118) / 评论(0) 分类 美联社新闻一分钟2010(一月)

TED演讲：气味背后的科学(4)

Here's how shape works in normal receptors. 这里展示的是形状是如何对通常的感受器起作用的。 You have a molecule coming in, it gets into the protein, which is schematic here, 一个分子进来，进到蛋白质里，图中所示意

发表于:2018-12-19 / 阅读(41) / 评论(0) 分类 TED演讲教育篇

TED演讲：气味背后的科学(1)

The fragrance that you will smell, you will never be able to smell this way again. 一会你们将闻到一款香水，它会带给你们绝无仅有的体验。 It's a fragrance called Beyond Paradise, which you can find in any store in the nation. 这

发表于:2018-12-19 / 阅读(57) / 评论(0) 分类 TED演讲教育篇

中英双语新闻 北极圈国家受全球变暖影响严重

BBC News. President Trump has been defending the sacking of the head of the FBI. He tweeted James Comey had lost the confidence of both Republicans and Democrats. And White House said the President had been considering firing him since taking office.

发表于:2018-12-20 / 阅读(64) / 评论(0) 分类 中英双语新闻

每日一词【1232】underground：地下

今天我们要学的词是underground。 Underground, 地下。为防止辐射物质通过土壤和地下水系统的扩散， The Japanese government is considering building an underground barrier near the Fukushima nuclear power plant, 日本政府正

发表于:2018-12-30 / 阅读(51) / 评论(0) 分类 英语每日一词

SSS 2011-07-04

This is Scientific American's 60-Second Science. I'm Steve Mirsky at the Lindau Nobel Laureate Meeting in Lindau Germany.This will just take a little more time than our usual minute. Why do I talk so much on money, when I'm a professor public health?

发表于:2019-01-08 / 阅读(88) / 评论(0) 分类 Scientific American(七)月

AP 2011-05-10

1. The Pentagon has released five silent videos it says it seized from Osama Bin Laden's compound. Most show him giving statements into a camera, but another shows him sitting on the floor watching TV, flipping to different channels that were showing

发表于:2019-01-11 / 阅读(137) / 评论(0) 分类 美联社新闻一分钟2011(五月)

AP 2011-10-22

1. Police in Maryland have found remains that they believe are those of a missing 11-year-old boy. William McQuain's mother was found beaten and stabbed to death last week. Her estranged husband was arrested in North Carolina the day after her body w

发表于:2019-01-11 / 阅读(126) / 评论(0) 分类 美联社新闻一分钟2011(十月)

VOA慢速英语 2007 0305a

This is the VOA Special English Development Report. Nanotechnology uses matter at the level of molecules and atoms. Researchers are finding different uses for particles with a length of one nanometer, or one-billionth of a meter. These include things

发表于:2019-01-11 / 阅读(60) / 评论(0) 分类 VOA慢速英语2007年（三）月

中英双语新闻——Facing the invasion of the superbugs

A killer bug spreading across the globe like wildfire sounds like something out of a bad sci- fi film. But while this is still the stuff of fantasy, microbiologists are concerned about the news of an enzyme with the potential to convert all bacteria

发表于:2019-01-19 / 阅读(64) / 评论(0) 分类 中英双语新闻

经济学人87:是否有种疫苗能对付毒品滥用？

Science and Technology Combating addiction 科技 打击吸毒 Can a vaccine stop drug abuse? 是否有种疫苗能对付毒品滥用？ It may be possible to vaccinate people against addictive drugs 向吸毒者接种疫苗防止毒瘾将成为可能

发表于:2019-01-26 / 阅读(84) / 评论(0) 分类 经济学人科技系列

万物简史 第143期:基本物质(15)

Because chemists for so long worked in isolation, conventions were slow to emerge. Until well into the second half of the century, the formula H2O2 might mean water to one chemist but hydrogen peroxide to another. C2H4 could signify ethylene or marsh

发表于:2019-01-29 / 阅读(73) / 评论(0) 分类 万物简史

Electric motor made in single molecule

BEIJING, Sept. 6 (Xinhuanet) -- Scientists from Tufts University of the U.S. have created the world's smallest electrical motor in a single molecule. The finding was published in the journal Nature Nanotechnology on Monday. In the research, scientist

发表于:2019-01-30 / 阅读(104) / 评论(0) 分类 英语新闻

高考阅读高频难词-10

451. applicable a. 可应用的,适当的 452. applicant n. 申请人 453. breadth n. 宽度 454. conservation n. 保存,保护 455. conservative a. 保守的 456. parallel n. 平行线；可相比拟的

发表于:2019-02-03 / 阅读(195) / 评论(0) 分类 英文语法词汇

万物简史 第459期:生命在前进(1)

21 Life Goes On 第二十一章 生命在前进 It isn't easy to become a fossil. 要变成化石可不容易。 The fate of nearly all living organismsover 99.9 percent of themis to compost down to nothingness. 几乎所有的生物其中的99.9%以上

发表于:2019-02-17 / 阅读(70) / 评论(0) 分类 万物简史

万物简史 第410期:生命的起源(4)

Yet we are talking about several hundred thousand types of protein, perhaps a million, 然而，我们在讨论的蛋白质有几十万种，也许是100万种， each unique and each, as far as we know, vital to the maintenance of a sound and happy

发表于:2019-02-17 / 阅读(61) / 评论(0) 分类 万物简史

万物简史 第411期:生命的起源(5)

Without the cell, they are nothing more than interesting chemicals. 没有细胞，它们只是有意思的化学物质。 But without the chemicals, the cell has no purpose. 但要是没有这些化学物质，细胞就毫无用处。 As the physici

发表于:2019-02-17 / 阅读(47) / 评论(0) 分类 万物简史

双语有声阅读：细菌

Bacteria Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousandth of a millimeter: a pinhead is about a millimeter across. Rod-shaped bacter

发表于:2019-02-17 / 阅读(86) / 评论(0) 分类 双语有声阅读

【英语时差8,16】芦笋-下

But thats what comes out after we eat asparagus, which is not necessarily the same was what went in. Our digestive systems do some pretty complex chemistry, you know. Plus, the act of cooking the asparagus probably changes the chemistry around a bit,

发表于:2019-02-23 / 阅读(69) / 评论(0) 分类 英语时差8，16

万物简史 第384期:浩瀚的海洋(3)

The hydrogen atoms cling fiercely to their oxygen host, but also make casual bonds with other water molecules. 氢原子死死地抓住其主子氧原子不放，而且与别的水分子的黏合也很随便。 The nature of a water molecule means th

发表于:2019-02-25 / 阅读(76) / 评论(0) 分类 万物简史
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