It's obvious that most of the things we think about that have lost their body hair, mammals without body hair, are aquatic ones, like the dugong, the walrus, the dolphin, the hippopotamus, the manatee.
很显然，每当我们想起 失去身体毛发的哺乳动物时 我们就会想起水生动物，比如懦艮，海象 海豚，河马，海牛