A mammal (from Latin mamma 'breast') [1] is a vertebrate animal of the class Mammalia (/ m ə ˈ m eɪ l i. ə /). Mammals are characterised by the presence of milk-producing mammary glands for feeding their young, a broad neocortex region of the brain, fur or hair, and three middle ear bones.

哺乳动物 （英語： mammals）或 哺乳类 （mammalians）是 脊椎动物亚门 四足总纲 哺乳纲 （学名： Mammalia）下属所有 动物 的统称，是 羊膜动物 两大 演化支 之一—— 合弓纲 唯一 尚存 的种群，分 胎盘类 （绝大多数）、 有袋类 和 单孔类 三支 亚纲。 与属于羊膜动物另一演化支 蜥形纲 的 爬行类 和 鸟类 不同的是，哺乳类具有 新皮质 、 毛发 、三個 听小骨 和布满 外分泌 腺 的 皮肤， 雌性 还會用特化的 汗腺 —— 乳腺 分泌富含营养的 乳汁 （哺乳）餵養幼崽 [1]。

any animal of which the female feeds her young on milk from her own body. Most mammals give birth to live young, not eggs. Humans, dogs, elephants, and dolphins are all mammals, but birds, fish, and crocodiles are not. 人、狗、大象和海豚都是哺乳动物，而鸟、鱼和鳄鱼则不是。

2024年7月9日 · Mammals are a group of complex warm-blooded animals belonging to the class Mammalia. They are recognized by the presence of mammary glands (which produce milk to feed the young) and a highly developed organ system (capable of …

2023年11月22日 · Mammals are warm-blooded, hair-bearing vertebrates that produce milk. Mammals represent a diverse and fascinating class of animals, encompassing a wide range of species from tiny shrews to humans to the colossal blue whale. As members of the class Mammalia, they share certain defining characteristics …

Mammal， 英语单词，主要用作 名词，意为“ [脊椎]哺乳动物”等 [1]。 n. 哺乳动物. 1A whale is a kind of mammal.鲸是一种哺乳动物。 《新英汉大辞典》 2Bats is the only mammal that can fly.蝙蝠是唯一能飞的哺乳动物。 3The whale is a mammal.鲸鱼是哺乳动物。 4It is the least protected mammal species.它是最不受保护的哺乳动物。 5About 35 percent of mammal species were lost.大约35%的哺乳动物物种消失了。

6 天之前 · mammal, (class Mammalia), any member of the group of vertebrate animals in which the young are nourished with milk from special mammary glands of the mother. In addition to these characteristic milk glands, mammals are distinguished by several other unique features.

爱词霸权威在线词典,为您提供mammal的中文意思,mammal的用法讲解,mammal的读音,mammal的同义词,mammal的反义词,mammal的例句等英语服务。

mammals，英语单词，主要用作名词，作名词时译为“ [古生] 哺乳类； 哺乳类动物 （mammal的复数）；哺乳纲”。 [1] 1.N-COUNTMammals are animals such as humans, dogs, lions, and whales. In general, female mammals give birth to babies rather than laying eggs, and feed their young with milk. 哺乳动物 [1] mammals，英语单词，主要用作名词，作名词时译为“ [古生] 哺乳类；哺乳类动物（mammal的复数）；哺乳纲”。

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