洋底盆地

The explanation he gives seems to entail a set of conditions that everybody knows: Now, Maury says, if bits of cork or chaff, or any floating substance, be put into a basin, and a circular motion be given to the water, all the light substances will b

发表于:2018-12-31 / 阅读(21) / 评论(0) 分类 《海底两万里》中英双语有声读物

Its often said we know more about the moon than we do about the depths of the ocean. There is a lot we dont know about the H2O that covers much of the planet. Now were getting closer, though, to an important understanding: Just how deep are the ocean

发表于:2019-01-02 / 阅读(67) / 评论(0) 分类 60秒科学

Ocean Floor Reveals Past Climate Changes Time capsule Lamont research professor Maureen Raymo, the director of the Core Repository, slides open a long, narrow drawer from the cabinet. Like thousands of others here, the drawer contains a long, thin cy

发表于:2019-01-13 / 阅读(51) / 评论(0) 分类 VOA标准英语2012年(一月)

Ocean Floor is Prime Target of Mining Industry The next great frontier for the mining industry could be hydrothermal vents that lie deep on the ocean floor. The super-hot flues create deposits of sulfide, which contain precious metals such as gold, s

发表于:2019-01-13 / 阅读(64) / 评论(0) 分类 VOA标准英语2012年(六月)

In Africa, New Technologies Help Teach Women to Read 在非洲,新技术帮助教女人阅读 More Africans are communicating via text, social media and email. In Senegal, literacy experts are using the new technologies to motivate and teach women

发表于:2019-01-14 / 阅读(27) / 评论(0) 分类 VOA标准英语2014年(十月)

MICHEL MARTIN, HOST: We're going to switch gears now. This is a mystery story, a spy story and a technology story all rolled into one. It started one February morning in the middle of the Pacific Ocean, when Soviet submarine K-129 sank to the bottom

发表于:2019-01-16 / 阅读(34) / 评论(0) 分类 2017年NPR美国国家公共电台9月