Our knowledge of the oceans a hundred years ago was confined to the two-dimensional shape of the sea-surface and the hazards of navigation presented by the irregularities in depth of the shallow water close to the land. The open sea was deep and mys

发表于:2018-12-08 / 阅读(612) / 评论(0) 分类 新概念英语第四册

Voice 1 Welcome to Spotlight. Im Liz Waid. Voice 2 And Im Robin Basselin. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 3 Over 60% of our planet is covere

发表于:2018-12-19 / 阅读(42) / 评论(0) 分类 环球英语 Spotlight

Mars Rover Finds Evidence of Ancient Sea David McAlary The U.S. space agency NASA says Mars once had a shallow, salty sea that could have supported life. The evidence has come from chemical and physic

发表于:2019-01-04 / 阅读(39) / 评论(0) 分类 VOA2004(上)--各类新闻

More Surprises from the Deep Sea Researchers hired to study part of the deep sea floor of the Pacific Ocean found a surprising number of new animal species. Scientists at the University of Hawaii at Manoa studied a 900-square-kilometer area in the ea

发表于:2019-01-12 / 阅读(52) / 评论(0) 分类 2016年VOA慢速英语(八)月

The twilight zone refers to the area between 100 and 1000 metres deep where a small amount of sunlight can still penetrate. The region is packed with ocean life that plays a key role in keeping atmospheric carbon-dioxide levels 30-percent lower than

发表于:2019-02-08 / 阅读(26) / 评论(0) 分类 英语新闻

Voice 1 Welcome to Spotlight. Im Liz Waid. Voice 2 And Im Robin Basselin. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 3 Over 60% of our planet is covere

发表于:2019-03-04 / 阅读(360) / 评论(0) 分类 环球英语 Spotlight