柯林斯词典porpoise /ˈpɔːpəs/ (porpoises) 1. N-COUNT A porpoise is a sea animal that looks like a dolphin. Porpoises usually swim in groups. 鼠海豚 返回 porpoise剑桥词典a mammal that lives in the sea , swims in groups , and looks similar to a dolphin but has a shorter rounder nose 鼠海豚 返回 porpoise