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VOA慢速英语2018 科学家观测到巨大星系团的诞生

Scientists Observe Birth of Huge Galaxy Cluster For the first time ever, astronomers have observed the birth of a galaxy cluster, known as a protocluster. The event, billions of light-years away, could form one of the largest-known structures in toda

发表于:2019-01-03 / 阅读(45) / 评论(0)

2018年VOA慢速英语(五)月

DEVELOPMENT REPORT - U.S. Group Fights to Free Modern-Day Sl

DEVELOPMENT REPORT - U.S. Group Fights to Free Modern-Day Slaves By Jill Moss Broadcast: Monday, March 08, 2004 This is Robert Cohen with the VOA Special English Development Report. American officials

发表于:2019-01-07 / 阅读(57) / 评论(0)

农业与发展

科学美国人60秒 SSS 2014-08-11

This is Scientific Americans 60-Second Science. I am Christopher itagliata. Got a minute? How heavy is the Milky Way in comparison to its neighbor galaxy, Andromeda? Well, depends how you calculate it. In 2006 one group of astronomers figured the Mil

发表于:2019-01-20 / 阅读(38) / 评论(0)

2014年Scientific American(八)月

科学美国人60秒 SSS 2014-08-07

How heavy is the Milky Way in comparison to its neighbor galaxy, Andromeda? Well, depends how you calculate it. In 2006 one group of astronomers figured the Milky Way was twice as massive as Andromeda. A 2009 estimate evened the score, calculating th

发表于:2019-01-20 / 阅读(27) / 评论(0)

2014年Scientific American(八)月

科学美国人60秒 SSS 2014-08-06

发表于:2019-01-20 / 阅读(41) / 评论(0)

2014年Scientific American(八)月

VOA常速英语2008年-Muslim Brotherhood to Boycott Local Elections i

By Challiss McDonough Cairo 07 April 2008 Egypt's largest opposition group, the Muslim Brotherhood, is urging its followers to boycott Tuesday's local council elections after the vast majority of its candidates were disqualified. VOA's Challiss McDon

发表于:2019-01-20 / 阅读(45) / 评论(0)

VOA常速英语2008年（四月）

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