柯林斯詞典cetacean /s??te???n/ (cetaceans) 1. N-COUNT Cetaceans are animals such as whales, dolphins, and porpoises. 鯨類動(dòng)物[usu pl] 返回 cetacean劍橋詞典any of various types of mammal , such as the whale , that live in the sea like fish 鯨目動(dòng)物 返回 cetacean