单词：rescours
单词：rescours 相关文章
Pinning the ants to the hot sand surface, the spiders first cook them to death before dragging them under. In the Namib, even the toughest animals struggle with the heat. Gemsbok trek to the crests of
浩瀚沙漠
In animals, this part of the brain evolved around the time of the dinosaurs before mammals existed. It's hardwired to beat starvation. For three days Jean-Luc has been trapped underground. He hasn't had a morsel to eat. He doesn't know it, but his b
国家地理2008年
Most people bite their nails when they're nervous or get cravings for chocolate or crisps. 大多数人在紧张的时候有啃指甲的癖好，有些人会渴望吃巧克力或薯片。 But two sisters from Bradford have taken it to a whole new lev
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This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? At Antarcticas Blood Falls, the ice is stained red by ancient, iron-rich water pouring out of subglacial lakes formed millions of years ago. The cascading water is e
Scientific American(四)月
In animals, this part of the brain evolved around the time of the dinosaurs before mammals existed. It's hardwired to beat starvation. For three days Jean-Luc has been trapped underground. He hasn't had a morsel to eat. He doesn't know it, but his br
自然百科2008年
In this rugged and unforgiving terrain littered with fractured rock and ice-cold rivers, the slightest miscalculation may have fatal consequences. The snow leopard is the worlds highest living big cat. But theres another smaller predator that ranges
自然百科2010年
Nothing this large would achieve powered flight until the 20th century, 65 million years later. And Quetzalcoatlus still may hold the record for flight duration. Probably stay aloft for a week. Probably it could have gone for 25, 26,000 miles in a si
探索与发现2013年
Weekly Address: Taxpayer Subsidies for Oil Companies are Neither Right, nor Smart, and They Should End 每周电视讲话：用纳税人的钱为石油公司提供补贴既不正当，也不明智，必须终止 WASHINGTON As oil and gas companies ma
奥巴马每周电视讲话