单词：magnetopotentiometer
单词：magnetopotentiometer 相关文章
Intelligent Crows Use Tools What do otters, chimpanzees, and one species of crow have in common? All three are animals. They also use tools. Scientists have long known that a crow native to New Caledonia is able to use tools. The birds use them to re
2016年VOA慢速英语(九)月
River otters, like other social animals, have to carefully weigh the costs and benefits of hanging out in large groups. A big group makes it easier to catch fish, which seems like a good deal, but there's a downside to social life too. More otters me
2016年Scientific American(十)月
For several years something mysterious has been plaguing sea otter populations off the coast of California. The animal may have seizure s, it may shake, it may act like it's weak, uh, it may not seem like it's very aware of its surroundings, and it m
国家地理2007年
Books and Arts; Book Review; 文艺；书评； Otters in the wild 野生水獭 Beguiling carnivores 欺骗性的肉食动物 A muse to poets, a mystery to scientists 诗人的灵感，科学家的谜团 Poets dig my style 诗人尽挖我的风采 Ot
经济学人文艺系列
Overfishing Whales and the Environment 过度捕鲸与环境 Until recently, when scientists studied changes in open-ocean ecosystems, they looked at changes in the bottom of the food chain that gradually make their way to the top, like food shortage
英语听力文摘 English Digest
EXPLORATIONS - Above Ground but Under the Sea: Visiting Some Popular AquariumsBy Nancy Steinbach Broadcast: Wednesday, June 07, 2006 (MUSIC) VOICE ONE: I'm Steve Ember. VOICE TWO: The glass dome of th
2006年慢速英语（六）月