[医] 鼻粘膜嗅部

Supermassive Black Holes 超大质量黑洞 - 5

By measuring how fast these stars were moving, he could prove if there really was a black hole at the center of an active galaxy. I picked a galaxy nearby which is called NGC 1068, an active galaxy, w

发表于:2018-12-07 / 阅读(330) / 评论(0)

超大质量黑洞

简单慢速英语阅读:Golf Lessons

Tim called Howard. Tim needed help. He needed help with his golf swing. He had a bad golf swing. He was a bad golfer. Howard had a good golf swing. He was a good golfer. Will you help me improve my golf swing? Tim asked. Yes, Ill help you improve you

发表于:2019-01-02 / 阅读(38) / 评论(0)

简单慢速英语阅读

2006年VOA标准英语-Nigeria Buries Dead Army Officers

By Gilbert da Costa Abuja 21 September 2006 A total of 13 senior Nigerian military officers who died in a plane crash over the weekend were given a national burial in the capital Thursday. The occasion that brought the country together. ----- Thousa

发表于:2019-01-12 / 阅读(89) / 评论(0)

2006年VOA标准英语（九月）

美国国家公共电台 NPR Cash Aid Could Solve Poverty — But There's A Catch

AILSA CHANG, HOST: It's an emerging idea in the fight against global poverty. Instead of offering poor people traditional aid, such as seeds or job training, why not just give cash? NPR's Nurith Aizenman traveled to Zambia where they've just finished

发表于:2019-01-16 / 阅读(43) / 评论(0)

2017年NPR美国国家公共电台8月

科学美国人60秒 SSS 未来声带研发方向

Voice is generated by a complex and beautiful biological system, and this is a system that allows all of us to communicate messages, concepts, and emotions. 声音是由负责、美丽的器官系统产生的，该系统可以让我们交流信息、想

发表于:2019-01-20 / 阅读(77) / 评论(0)

2017年Scientific American(二)月

Uma Gunasilan

BBC Learning English People and Places Sun Hai Nin SIG Sun Hai Nin: Well, hello everybody Im Hai Nin, Im from China and now Im in London. William:And Im William Kremer welcome to People and Places. You just heard a young Chinese Woman, Sun Hai Nin.

发表于:2019-02-03 / 阅读(136) / 评论(0)

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accident analysis report

Adenophora paniculata Nannf.