The plural form of mammal.

mammal 的复数形式。

Animals of the class Mammalia.

• Warm-blooded, with hair or fur; females produce milk.
• Vertebrates with three middle ear bones and a single lower jawbone.

哺乳纲的动物。

• 恒温，具毛发；雌性分泌乳汁哺育幼崽。
• 脊椎动物；中耳有三块听小骨，下颌为单骨。