[网络] 海上搜救手册;海空搜救手册;国际海空搜救手册

Algae seem harmless enough. These precursors to plants thrive throughout the world's waters. But these single-celled plants have global consequences. We can thank them for oxygen in the atmosphere, oil in the lithosphere as well as dead zones in the

发表于:2019-01-08 / 阅读(56) / 评论(0) 分类 Scientific American(十一)月

Sometimes scientific discoveries are hidden in museum specimen drawers and old journal articles. In two studies in the journal Science, researchers who went through the stuff in institutional attics offer new insights into the development and diversi

发表于:2019-01-08 / 阅读(63) / 评论(0) 分类 Scientific American(三)月

Whale Deaths On the Rise in Alaska 阿拉斯加鲸鱼死亡数量有所上升 American scientists have reported a sharp increase in the number of dead whales found in the Gulf of Alaska. From May through August, 30 whales washed up along the coast of

发表于:2019-01-12 / 阅读(79) / 评论(0) 分类 2015年VOA慢速英语(九)月

GWEN IFILL: Finally tonight: how climate change may be affecting life in Alaska as we know it and the captivating images we see there, from ice to Marine life. NewsHour science correspondent Miles O'Brien went there to see for himself. MILES O'BRIEN:

发表于:2019-01-27 / 阅读(37) / 评论(0) 分类 PBS访谈环境系列

AGRICULTURE REPORT - Red Tides By Mario Ritter Broadcast: Tuesday, February 01, 2005 I'm Phoebe Zimmermann with the VOA Special English Agriculture Report. Different events can change the balance of s

发表于:2019-01-30 / 阅读(59) / 评论(0) 分类 农业与发展

Plastic Pollution NB: This is not an accurate word-for-word transcript Dan: Hello and welcome 6 Minute English from the BBC. Im Dan Walker Smith and today Im joined by Kate. Kate: Hello Dan. Dan: Now today Kate and I are talking about pollution. Kate

发表于:2019-02-04 / 阅读(52) / 评论(0) 分类 六分钟英语