captive cetaceans

• 鲸类动物

captive cetaceans的用法和样例：

例句

1. It is not clear whether cetaceans undergo dream sleep.
   鲸类动物是否经历梦睡眠还不清楚。
2. Like other cetaceans, aiwhas filter food through the sieve-plates in their baleen.
   像其他鲸类动物一样，艾华兽用鲸须中的筛板滤食食物。