noun 下载 🔗分享 哺乳动物 An animal of the class Mammalia, characterized by being warm-blooded, having hair and feeding milk to its young. Examples : "The dog is a mammal because it is warm-blooded, has fur, and nurses its puppies. " 狗是哺乳动物，因为它体温恒定，身上有毛，而且用奶喂养小狗。 animal biology organism 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 哺乳动物，哺乳类。 A vertebrate with three bones in the inner ear and one in the jaw. Examples : "The zookeeper pointed out that the animal was a mammal because it had three tiny bones in its inner ear. " 动物园管理员指出这种动物是哺乳动物，因为它内耳里有三块微小的骨头。 animal biology organism physiology anatomy 与AI对话词汇游戏阅读练习
