双极黑子

And after a while a pattern emerged. 久而久之,人们就归纳出一个模式 If you observe sun spots over several years, 若连续观察太阳黑子好几年 they come and go with an about an eleven year cycle. 会发现它们约每隔11年会周

发表于:2018-12-07 / 阅读(201) / 评论(0) 分类 太阳科普

RACHEL MARTIN, HOST: We try not to obsess about this too much, but we really do get to work very early around here. We don't get a whole lot of sunlight, especially in the winter months. So when you look around the newsroom, you see these special lam

发表于:2018-12-17 / 阅读(170) / 评论(0) 分类 2017年NPR美国国家公共电台11月

Next, the U.S. Army is on a mission to recruit 80,000 new soldiers by next year. It's easier said than done. Many people don't meet the military's requirements to join. Weight, age, drug use, medical conditions, criminal records, they can all keep so

发表于:2018-12-20 / 阅读(162) / 评论(0) 分类 CNN美国有线新闻2017年12月

Sunspots 太阳黑子 Is every part of the sun equally hot? 太阳的各个部分都一样热吗? No, they aren't. Some parts are colder than other parts. 不是的。有些地方比其他地方冷。 How do we know that fact? 我们是如何知道这

发表于:2019-01-10 / 阅读(181) / 评论(0) 分类 与美国小学生一起学英文第10册

By David McAlary Washington 07 March 2006 NCAR scientists Mausumi Dikpati (left), Peter Gilman, and Giuliana de Toma examine results from a new computer model of solar dynamics Researchers predict tha

发表于:2019-02-04 / 阅读(184) / 评论(0) 分类 2006年VOA标准英语(三月)

Voice 1 Hello. Im Rachel Hobson. Voice 2 And Im Mike Procter. Welcome to Spotlight. This programme uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 3 I was in the tent

发表于:2019-02-14 / 阅读(178) / 评论(0) 分类 环球英语 Spotlight

16. UPBRAlD : REPROACH :: (A) dote : like (B) lal: : stray (C) vex : please (D) earn : desire (E) recast : explain Directions: Each passage in this group is followed by questions based on its content.

发表于:2019-02-21 / 阅读(268) / 评论(0) 分类 实用英语
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allantoic veins
allergic nodular angitis
anisaldehyde
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armature return spring
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cardy oil
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excessive swelling
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roof access
rotary Brownian motion
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shaggymane
sheet-web weaver
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tipsifying
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ultimate source
ultralarge crude carrier
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vertical oscillating transformer
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