在绝境中燃烧希望，追寻属于自己的自由。三生三世十里桃花免费观看高清

　　National Geographic Explorer takes an up-close look at the largest hornet in the world Japanese giant hornet. The two-inch predator combines both power and aggression in its small form. It can call as many as forty honeybees in a minute. Their painful venom has even taken the lives of some human beings.