hibernation [ˌhaɪbɚˈneʃən]

例句:

• Maternity roosts and hibernation sites have been granted special protection.
  来自BBC
• Bears wake up in the spring after a winter of hibernation.
  熊经过一个冬天的冬眠后在春季苏醒.
  
• At the first cold of autumn, many insects go into hibernation.
  入秋第一阵寒潮刚到, 许多昆虫就进入了冬眠.
  
• The tortoise spends the winter months in hibernation.
  乌龟在冬眠中度过寒冬季节.
  
• The butterflies hang in near-motionless hibernation during December and January.
  来自SA
• The cave may have been used as a winter hibernation site.
  来自BBC