1
a mammal
A whale is a mammal.
鲸鱼是一种哺乳动物。
哺乳动物
mammals — plural of mammal
先理解核心含义，再看它在真实句子里的用法。
哺乳动物
A warm-blooded animal that has fur or hair and feeds its young with milk.
A whale is a mammal.
鲸鱼是一种哺乳动物。
哺乳纲的脊椎动物,特征为恒温、有毛发或体毛,并以乳汁哺育幼崽。
A vertebrate animal of the class Mammalia, characterized by being warm-blooded, having fur or hair and producing milk with which to feed their young.
任何温血脊椎动物,皮肤多少有毛,除单孔目外胎生,以乳汁哺育幼崽。
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
内耳有三块听小骨、下颌有一块骨的脊椎动物。
A vertebrate with three bones in the inner ear and one in the jaw.
Whales are mammals, not fish, because they breathe air and feed their young with milk.
鲸是哺乳动物，不是鱼，因为它们呼吸空气并用乳汁哺育幼崽。
The platypus is a unique mammal that lays eggs instead of giving birth to live young.
鸭嘴兽是一种独特的哺乳动物，它产卵而非胎生。
Most mammals have hair or fur covering their bodies to help regulate body temperature.
大多数哺乳动物身上有毛发或皮毛，有助于调节体温。
A whale is a mammal.
鲸鱼是一种哺乳动物。
Mammals are warm-blooded.
哺乳动物是温血的。
mammal 是可数名词，复数形式为 mammals。
Mammals feed their young with milk.
哺乳动物用乳汁哺育幼崽。
Not this
Whales are mammal.
Use this
Whales are mammals.
中文母语者常忽略名词复数形式，但mammal是可数名词，主语whales复数，表语也应使用复数mammals。
Not this
Mammal is warm-blooded animal.
Use this
A mammal is a warm-blooded animal.
可数名词单数作主语时需要冠词a/an，同时补全表语冠词，构成正确主谓宾结构。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
海洋哺乳动物
Whales and dolphins are marine mammals that live in the ocean.
鲸鱼和海豚是生活在海洋中的海洋哺乳动物。
陆地哺乳动物
Elephants are the largest land mammals on Earth.
大象是地球上最大的陆地哺乳动物。
小型哺乳动物
Mice and shrews are common small mammals in forests.
老鼠和鼩鼱是森林中常见的小型哺乳动物。
温血哺乳动物
As warm-blooded mammals, humans maintain a constant body temperature.
作为温血哺乳动物，人类保持恒定的体温。
已灭绝的哺乳动物
The woolly mammoth is a famous extinct mammal from the Ice Age.
猛犸象是冰河时期著名的已灭绝哺乳动物。
哺乳动物物种
There are over 5,000 mammal species worldwide.
全世界有超过5000种哺乳动物物种。
Use mammals naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想妈妈（mama）用乳汁喂养宝宝，这就是哺乳动物（mammal）。
[object Object]
Words like 'camel' and 'panel' share a similar ending spelling with 'mammal', but their pronunciation differs slightly.
Dictionary facts from ECDICT, WIKTIONARY.