STEVE INSKEEP, HOST: Next we have a discovery about the ocean, which scientists learned from great white sharks. NPR's Merrit Kennedy has a story that reveals how much we don't know about what's underwater. MERRIT KENNEDY, BYLINE: Barbara Block has b

发表于:2018-12-17 / 阅读(57) / 评论(0) 分类 2018年NPR美国国家公共电台5月

Bring Bronx Zoo To Your Living Room将动物园带进卧室 There are a lot of misconceptions about what zoos and aquariums are today in the 21st century. 21世纪,人们对动物园和水族馆存在很多误解。 Jim Breheny, Director of the Bro

发表于:2018-12-24 / 阅读(68) / 评论(0) 分类 2017年Scientific American(三)月

The tropical night descends on a quiet beach, but just off shore, beneath the tranquil waves things are busy. A group of research scientists are scouring a coral reef looking for fish, or more accurately, the parasitic passengers attached to the fish

发表于:2018-12-26 / 阅读(57) / 评论(0) 分类 自然百科2009年

By Malcolm Brown Washington, D.C. 24 November 2006 watch Snakehead report An aquatic interloper appears to have adjusted easily to life in the Potomac River system near Washington, DC -- far from its native Asia, where it is regarded as a delicacy.

发表于:2019-01-12 / 阅读(116) / 评论(0) 分类 2006年VOA标准英语(十一月)

Oceans Most Wanted 伴随着人们的经济活动和国际交往,一些物种由原生存地借助于人为作用或其他途径移居到另一个新的生存环境并在新的栖息地繁殖并建立稳定种群,这些物种被称为外来物种。

发表于:2019-03-09 / 阅读(211) / 评论(0) 分类 英语听力文摘 English Digest