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.A cetacean ( Grampus griseus ) related to and resembling the dolphins but lacking a beaklike snout....

“海豚属”的英语可以翻译为：Delphinus ...