鲸类用英语怎么说？

鲸类

• cetacea

例句

• several small gregarious cetacean mammals 几种小型群居的鲸类哺乳动物
• It is not clear whether cetaceans undergo dream sleep. 鲸类动物是否经历梦睡眠还不清楚.
• Cetaceans reduce the number of breaths they take during rest periods. 鲸类动物在休息时减少它们的呼吸次数.
• A cetacean ( Grampus griseus ) related to and resembling the dolphins but lacking a beaklike snout. 灰海豚,逆戟鲸一种与海豚有亲缘关系并形似海豚的鲸类动物 ( 灰海豚灰海豚属 ),但缺少喙状口鼻部.
• The sperm whale is believe to dive deeper than any other cetacean. 人们相信,抹香鲸比其他鲸类动物潜得更深.