2. It appears to play a major role in sexual development,
hibernation in animals, metabolism, and seasonal breeding.
它似乎在性发育、动物冬眠、新陈代谢和季节更迭中扮演着一个主要角色。
3. Before entering
hibernation most species eat a large amount of food and store energy in fat deposits in order to survive the winter.
进入冬眠之前大多数物种为了冬天生存下来吃大量的食物以及以脂肪沉积存储能量。