hibernation

Bears store a large amount of body fat to sustain them during hibernation.

(Chinese) 熊储存大量的体脂，以维持它们在冬眠期间的生命。

The frogs emerged from hibernation as soon as the spring temperatures began to rise.

(Chinese) 随着春天温度开始升高，青蛙们结束了冬眠，现身了。