太阳科普 第15期

The key difference of course is that a sunspot's 最关键的不同点在于太阳黑子 an awful lot bigger and so the total energy, 大得多，所以太阳磁场内 or the amount of energy in the magnetic field 所含的总能量大得惊人 on th

太阳科普 第8期

Now the speed of light is a very,very big number. 光速是个很大的数字 So if we just take a small amount of mass, 所以只要一点点质量 you get a huge amount of energy. 就含有大量能量 And that's the energy which actually powers ou

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

美国科学60秒 SSS 2012-10-16

Pet turtles can be unsanitary. But Chinese soft-shelled turtles really up the ante on distasteful behavior. They perform a variation on urinationthrough their mouths. Most land-based vertebrates produce urine to get rid of water-soluble toxic waste,

SSS 2010-02-19

When youre looking for a table in a crowded cafeteria, you probably give wide berth to the family that sounds like its sharing a big dish of whooping cough. Well, not if youre a house finch, particularly a male. Because a study in the journal Biology

SSS 2008-05-16

This is Scientific American 60-Second Science, Im Cynthia Graber. This will just take a minute. Heres one space mission that is definitely going to be unmannedNASA is going to the sun. The Johns Hopkins University Applied Physics Laboratory is buildi

SSS 2008-07-10

This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? After a bad day at the office, were more likely to flip on a nature channel than find a flower-filled meadow or sunny beach to lower our stress. But if you cant head

英文药品说明书的写法（十一）

上述10项是绝大多数英文药品说明书中必备项目，但是许多说明书中还常常出现其他一些项目。例如： 1、特点（Characteristics） 2、性质（Properties） 3、药代动力学（Phamacokinetics） 4、用药过量（

英文药品说明书的写法（二）

第二节 性状 许多药品说明书的第一项是Description（性状），其原意是叙述、描写，在药品说明书及药典中一般都译为性状，其内容主要是介绍外观、理化性质、组成成分、结构、特征等。这一

生活大爆炸第三季第九集_3

好吧 Well... -那我该给克瑞普克下毒 -不 - I suppose I could poison Kripke. - No! 不 这其实很简单 No. It's a simple matter. 有那么几种有毒化学物 There are several toxic chemicals 尸检是查不出来的 that'd be untracea

经济学人321:爬行动物的排尿 可算是方便了

Science and technology 科学技术 Reptilian micturition 爬行动物的排尿 That's a relief 可算是方便了 Softshell turtles urinate through their mouths 鳖类通过其嘴部小便 WHY did the turtle stick its head in a bucket? 为什么乌龟

The Shepherd and the Bureaucrat

A bureaucrat was hiking when he came upon a shepherd tending a large flock. The bureaucrat took a fancy to the sheep and asked the shepherd, If I can guess how many there are, may I have one? The shepherd thought it unlikely the man would guess the e

China faces severe plasma shortage: health minister

BEIJING, Dec. 11 (Xinhua) -- China is faced with severe challenges in collecting enough blood plasma to produce medicines, Health Minister Chen Zhu said Sunday. Chen called on the public to join blood donation after donating blood plasma at the Beiji

学个词Learn a Word 第983期 Bureaucracy

今天我们要学的词是bureaucracy。 Bureaucracy, 官僚。美国国防部长盖茨上周末公开对军方庞大的官僚体制提出批评。 Gates took aim at what he called a bloated bureaucracy, 他还保证要亲自过问，精简军方的官

发送电子邮件也会产生碳足迹么？

You might not realise it, but sending even a short email has an impact on the environment. 你可能没有意识到，即使是发送一封小小的邮件也会对环境产生影响。 Scientists estimate that an email adds about four grams (0.14 oun

大众拟用催化转化器修复受影响汽车

Volkswagen has devised a new catalytic converter that could fix the majority of the cars in the US affected by the diesel emissions scandal, as details emerge of its attempts to satisfy regulators. 大众汽车(Volkswagen)设计出一种新的催化转

VOA标准英语10月-Conflict Resolution Marked Career of Nobel Laurea

Conflict resolution marked the career of former Finnish president Martti Ahtisaari who has received this year's Nobel Peace Prize for his efforts to secure peace in various regions of the world. In this report from Washington, Senior Correspondent A

TED演讲:人生交叉点(7)

One of my favorite examples of liminal excellence comes from the late Dr. Claudia Alexander, 我最欣赏的一位具有交叉才能的榜样是已故的克劳迪娅亚历山大博士， a black woman plasma physicist, who passed away this past July

Lesson 44-1 Home Appliances 家用电器

Listen to the statements and check the correct answers. 1.Is sweeping out the tiny dust bothering you a lot? From now on if you have this machine, doing the housework will become a very easy job. This is a portable vacuum cleaner. lt's light and wire

Chinese health minister donates plasma

CHENGDU, May 5 (Xinhua) -- Chinese Health Minister Chen Zhu donated plasma on Saturday in Chengdu, capital of southwest China's Sichuan Province, and called on health workers to take the lead in blood donation to ease the country's blood supply short