《分钟地球》趣味科普（精选双语） _ 每日英语听力_欧路词典_2-《分钟地球》你知道吗：世界上有专门为动物修建的5座桥！

热门回复：

• 老猴爱科普:1-Why did the chicken cross the road?We may never know, since she probably never got to the other side.In the US alone, about a million animals are flattened by passing motorists each day — and that doesn't even count all the bugs!Animals are constantly confronted with barriers, some of them that are completely natural, and others that we build that are barely barriers at all.As we build our own infrastructure, we're also adding to this obstacle course without meaning to, and these unintentional fences are some of the most effective animal barriers out there.Roads are just the beginning.Take high-tension power lines, for example.