SSS 2008-06-23

时间：2010-05-14 02:42:34

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（单词翻译）

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute?

On June 4th we told you about iron snowflakes on Mercury. Today we have some radical¹ news about the atmosphere of Venus. Literally², a radical is a molecule³ that reacts easily with other chemicals because of an unpaired electron. Astronomers⁴ have found the hydroxyl radical in the Venusian atmosphere. Hydroxyl is oxygen with a single hydrogen H1O, if you like. The Venus Express probe discovered hydroxyl in the clouds that shroud⁵ the planet. Researchers from the European Space Agency announced the finding in the journal Astronomy and Astrophysics Letters. Hydroxyl is important on Earth, because it promotes the formation of ground-level ozone⁶, a pollutant⁷. Finding the radical on Venus will help scientists test their models of Venus’s atmosphere. Hydroxyl also exists in the thin Martian atmosphere where it’s thought to stabilize⁸ carbon dioxide and prevent it from becoming carbon monoxide. It may also be responsible for sterilizing⁹ the red planet’s top layers of soil.

Thanks for the minute for Scientific American’s 60-Second Science, I’m Steve Mirsky.

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1 radical
n.激进份子，原子团，根号；adj.根本的，激进的，彻底的
参考例句：
The patient got a radical cure in the hospital.病人在医院得到了根治。 She is radical in her demands.她的要求十分偏激。

2 literally
adv.照字面意义，逐字地；确实
参考例句：
He translated the passage literally.他逐字逐句地翻译这段文字。 Sometimes she would not sit down till she was literally faint.有时候，她不走到真正要昏厥了，决不肯坐下来。

3 molecule
n.分子，克分子
参考例句：
A molecule of water is made up of two atoms of hygrogen and one atom of oxygen.一个水分子是由P妈̬f婘̬ 妈̬成的。 This gives us the structural formula of the molecule.这种方式给出了分子的结构式。

4 astronomers
n.天文学者，天文学家( astronomer的名词复数 )
参考例句：
Astronomers can accurately foretell the date,time,and length of future eclipses. 天文学家能精确地预告未来日食月食的日期、时刻和时长。来自《简明英汉词典》 Astronomers used to ask why only Saturn has rings. 天文学家们过去一直感到奇怪，为什么只有土星有光环。来自《简明英汉词典》

5 shroud
n.裹尸布，寿衣；罩，幕；vt.覆盖，隐藏
参考例句：
His past was enveloped in a shroud of mystery.他的过去被裹上一层神秘色彩。 How can I do under shroud of a dark sky?在黑暗的天空的笼罩下，我该怎么做呢？

6 ozone
n.臭氧，新鲜空气
参考例句：
The ozone layer is a protective layer around the planet Earth.臭氧层是地球的保护层。 The capacity of ozone can adjust according of requirement.臭氧的产量可根据需要或调节。

7 pollutant
n.污染物质，散布污染物质者
参考例句：
Coal itself is a heavy pollutant.煤本身就是一种严重的污染物。 Carbon dioxide may not be a typical air pollutant.二氧化碳可能不是一种典型的污染物。

8 stabilize
vt.（使）稳定，使稳固，使稳定平衡；vi.稳定
参考例句：
They are eager to stabilize currencies.他们急于稳定货币。 His blood pressure tended to stabilize.他的血压趋向稳定。

9 sterilizing
v.消毒( sterilize的现在分词 )；使无菌；使失去生育能力；使绝育
参考例句：
The nurse is sterilizing the surgical instruments. 护士在把外科手术器具消毒。来自辞典例句 By testing, steam is the ble sterilizing method for herbal medicine. 这些方法难以保证药性，或有残留，要不然就是费用昂贵。来自互联网

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