动物为什么能冬眠？对此，人类已经探索了100多年。近年来，美国科学家终于揭开了这个奥秘。实验证明，在一些动物的血液中存在着一种能够诱发动物冬眠的物质。经过无数次试验，科学家终于提炼出了这种诱发物质，这是一种类似荷尔蒙的特殊蛋白质，被称为“冬眠激素”。科学家指 Why can animals hibernate? In this regard, mankind has been exploring for more than 100 years. In recent years, American scientists have finally unveiled this mystery. Experiments have shown that there is a substance that can induce animal hibernation in the blood of some animals. After numerous experiments, scientists finally extracted this evoked substance, which is a special hormone-like protein called “hibernating hormone.” Scientists