hibernation
🇺🇸
/ˌhaɪbərˈneɪʃn/
🇬🇧
/ˌhaɪbəˈneɪʃn/
a deep sleep that some animals go into during winter to save energy
Bears go into hibernation during the cold winter months to survive without food.
熊は寒い冬の間、冬眠に入り、食べ物なしで生き延びます。