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SSS 2008-05-16

时间:2010-05-14 01:17来源:互联网 提供网友:0922013129   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American 60-Second Science, I’m Cynthia Graber. This will just take a minute.

Here’s one space mission that is definitely going to be unmanned—NASA is going to the sun. The Johns Hopkins University Applied1 Physics Laboratory is building a craft that will visit the sun’s corona2. It’ll speed past the sun at 125 miles per second, be pelted3 with energized4 dust, and exposed to radiation and temperatures up to 2,600 degrees Fahrenheit5.Scientists have been trying to figure out how to send such a probe for decades, but the technology didn’t exist at a feasible cost until now. The probe will circle the sun for seven years until it reaches its closest approach, about 4.1 million miles from the sun. That’s eight times closer than previous missions. It’ll provide data on a variety of phenomena6, such as magnetic fields, solar winds, dusty plasma7 and energetic particles. Such subjects are more than just interesting—researchers say that understanding energetic particles that zip our way from the sun can affect cell phones and power grids8 here on the ground, and could threaten the health of astronauts in orbit. The probe is scheduled to launch in 2015. 
Thanks for the minute for Scientific American 60-Second Science, I’m Cynthia Graber.


点击收听单词发音收听单词发音  

1 applied Tz2zXA     
adj.应用的;v.应用,适用
参考例句:
  • She plans to take a course in applied linguistics.她打算学习应用语言学课程。
  • This cream is best applied to the face at night.这种乳霜最好晚上擦脸用。
2 corona jY4z4     
n.日冕
参考例句:
  • The corona gains and loses energy continuously.日冕总是不断地获得能量和损失能量。
  • The corona is a brilliant,pearly white,filmy light,about as bright as the full moon.光环带是一种灿烂的珠白色朦胧光,几乎像满月一样明亮。
3 pelted 06668f3db8b57fcc7cffd5559df5ec21     
(连续地)投掷( pelt的过去式和过去分词 ); 连续抨击; 攻击; 剥去…的皮
参考例句:
  • The children pelted him with snowballs. 孩子们向他投掷雪球。
  • The rain pelted down. 天下着大雨。
4 energized bb204e54f08e556db01b90c79563076e     
v.给予…精力,能量( energize的过去式和过去分词 );使通电
参考例句:
  • We are energized by love if we put our energy into loving. 如果我们付出能量去表现爱意,爱就会使我们充满活力。 来自辞典例句
  • I am completely energized and feeling terrific. 我充满了活力,感觉非常好。 来自辞典例句
5 Fahrenheit hlhx9     
n./adj.华氏温度;华氏温度计(的)
参考例句:
  • He was asked for the boiling point of water in Fahrenheit.他被问到水的沸点是华氏多少度。
  • The thermometer reads 80 degrees Fahrenheit.寒暑表指出华氏80度。
6 phenomena 8N9xp     
n.现象
参考例句:
  • Ade couldn't relate the phenomena with any theory he knew.艾德无法用他所知道的任何理论来解释这种现象。
  • The object of these experiments was to find the connection,if any,between the two phenomena.这些实验的目的就是探索这两种现象之间的联系,如果存在着任何联系的话。
7 plasma z2xzC     
n.血浆,细胞质,乳清
参考例句:
  • Keep some blood plasma back for the serious cases.留一些血浆给重病号。
  • The plasma is the liquid portion of blood that is free of cells .血浆是血液的液体部分,不包含各种细胞。
8 grids 3ee63c2476f49cd6c03c72e14687b4f7     
n.格子( grid的名词复数 );地图上的坐标方格;(输电线路、天然气管道等的)系统网络;(汽车比赛)赛车起跑线
参考例句:
  • Typical framed structures are beams, grids, plane and space frames or trusses. 典型构架结构为梁、格栅、平面的和空间的框架或桁架。 来自辞典例句
  • The machines deliver trimmed grids for use or stock. 这种机器铸出修整过的板栅,以供使用或储存。 来自辞典例句
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TAG标签:   SSS  corona
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