词典释义：
a very young child, especially one that is newly or recently born
婴儿（尤指新生儿）
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his wife's just had a baby 他妻子刚生了孩子
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[as modifier]
baby girl .女婴。
a young or newly born animal
（动物）幼崽；幼鸟。
the youngest member of a family or group
老幺（家庭或群体中年纪最小的人）
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Clara was the baby of the family .克拉拉是家里的老幺。
a timid or childish person
胆小的人；幼稚的人
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‘Don't be such a baby!’ she said witheringly .“别像个孩子似的！”她尖刻地说。
〈喻〉责任；成就；兴趣。
〈非正式〉宝贝儿（指年轻女子或爱人，常用作称呼）
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my baby left me for another guy .我的宝贝儿离开我，跟另一个家伙走了。
a thing regarded with affection or familiarity
宝贝（喜爱或熟悉的东西）
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this baby can reach speeds of 120 mph .这辆宝贝每小时能跑到１２０英里。
comparatively small or immature of its kind
（幼）小的；小型的
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a baby version of the Oxford Movement .牛津运动的微型版。
(of vegetables)picked before reaching their usual size
（蔬菜）嫩的；未完全长熟就采摘的
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baby carrots .嫩胡萝卜。
treat (someone) as a baby; pamper or be overprotective towards
把（某人）当作婴儿对待；溺爱；对…保护过多。
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throw the baby out （或away ）with the bathwater discard something valuable along with other things that are inessential or undesirable 把孩子连同洗澡水一起倒掉；把精华连同糟粕都一起扔了
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(a) baby boy 男婴
真题例句：
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a baby cow/pig 小牛/小猪
真题例句：
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Baby Boomers 婴儿潮
真题例句：
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baby sb 把某人当婴儿看待
真题例句：
"late Middle English： probably imitative of an infant's first attempts at speech．"
