mammal

名词 mammal:

1. any warm-blooded vertebrate having the skin more or less covered with hair; young are born alive except for the small subclass of monotremes and nourished with milk
   同义词：mammalian

1. A mammal having nails or claws.
   有指甲或爪的动物
2. A quadruped mammal.
   四足哺乳动物
3. A whale is no less a mammal than a horse is.
   鲸鱼和马一样都是哺乳动物。
4. Monkeys and dogs are mammals.
   猴子和狗都是哺乳动物。

mam.mal

n.（名词）
Any of various warm-blooded vertebrate animals of the class Mammalia, including human beings, characterized by a covering of hair on the skin and, in the female, milk-producing mammary glands for nourishing the young.
哺乳动物：任一种包括人类在内的哺乳动物纲的温血脊椎动物，其特点是皮肤上有一层毛，雌性具有养育幼崽的能产生奶汁的乳腺

来源：
From Late Latin mamm3lis [of the breast]
源自 后期拉丁语 mamm3lis [乳房的]
from Latin mamma [breast] * see m3- 2
源自 拉丁语 mamma [乳房] *参见 m3- 2

【引伸】
mamma.lian