1. During the winter, bears are hibernant and can sleep for months without eating or drinking.
（在冬天，熊处于冬眠状态，可以数月不进食或喝水。）

2. The seeds of some plants remain hibernant until the right conditions for growth occur.
（一些植物的种子保持休眠状态，直到有利于生长的条件出现。）