[林] 用材树种

This is scientific Americans, 60 second science, I'm Sarah Fecht. Got a minute Thats not a bird whistling. This sound was recorded 2000 feet below the oceans surface. Scientists postulated decades ago that deep-sea animals might use sound to navigate

发表于:2019-01-08 / 阅读(47) / 评论(0) 分类 Scientific American(二)月

Tree Deaths Linked to Climate Change Stanford University graduate student William Anderegg has seen this forest die-off firsthand. His doctoral thesis documents the impact of drought on trembling aspen, the most common tree in North America. These ar

发表于:2019-01-13 / 阅读(58) / 评论(0) 分类 VOA标准英语2012年(九月)

Commerical fisherman Chad Isaak and a partner haul in a boatload of invasive Asian Carp, Jul 2010 The multi-billion-dollar commercial fishing industry in the Great Lakes region of the United States employs more than 800,000 people, but is threatened

发表于:2019-01-13 / 阅读(49) / 评论(0) 分类 VOA标准英语2010年(七)月

Eastern Atlantic fishing 'unsustainable' 大西洋东部捕渔过度 Overfishing is a greater threat to the area than pollution 对这一海区,过度捕捞的威胁大于污染的威胁 Two-thirds of the main commercial fish species caught in the

发表于:2019-01-30 / 阅读(37) / 评论(0) 分类 双语有声阅读

Science and technology 科学技术 Genetically modified tree 转基因树木 Into the wildwood 进军森林 A GM species may soon be liberated deliberately 一种转基因树木不久或将大量种植,但很审慎 ONCE upon a time, according to f

发表于:2019-02-03 / 阅读(20) / 评论(0) 分类 经济学人科技系列

I am vertical/But I would rather be horizontal, wrote Sylvia Plath, meditating on the consequences of a treelike existence. A team of researchers from the Vienna University of Technology recently announced another perspective on arboreal repose. Usin

发表于:2019-02-13 / 阅读(43) / 评论(0) 分类 实用英语