单词：toco toucans
单词：toco toucans 相关文章
The toucan's long bill has long perplexed biologists. Darwin theorized that it attracted mates. Other suggested uses ranged from fruit peeling to territorial defense. But a report in the July 24th issue of the journal Science offers another explanati
Scientific American(七)月
Big Bill Chill When people get hot, we sweat. When dogs overheat, they pant. And birds? At least one typethe Toco toucanuses its oversized bill to cool down. Even if youre never seen a live toucan up close, you might be able to picture its huge, mult
英语时差8，16
Our next destination could easily be described as a piece of paradise-- Costa Rica. It is a favorite get-away for both eco-trekkers and the surf set. Now if you are looking to enjoy a bit of the good life, for as they say Costa Rica, la Puda Vida, th
自然百科2010年