1. 婴儿；婴孩A baby is a very young child, especially one that cannot yet walk or talk.
e.g. She used to take care of me when I was a baby...我还在襁褓中时，她曾经照顾过我。e.g. My wife has just had a baby...我妻子刚生了孩子。
2. （动物）幼崽；幼兽；幼鸟A baby animal is a very young animal.
e.g. ...a baby elephant.幼象e.g. ...baby birds.雏鸟
3. （蔬菜）幼嫩的Baby vegetables are vegetables picked when they are very small.
e.g. Serve with baby new potatoes.配上小个的新土豆。
4. 宝贝儿（昵称，尤用于年轻女性）Some people use baby as an affectionate way of addressing someone, especially a young woman, or referring to them.
baby的翻译
e.g. You have to wake up now, baby...该起床了，宝贝儿。e.g. He was confused, poor baby.他都懵了，可怜的家伙。
5. 把婴儿和洗澡水一起倒掉；将精华连同糟粕一起丢弃；不分好坏地全盘抛弃If you throw the baby out with the bath water, you lose the good parts of something as well as the bad parts, because you reject it as a whole instead of just removing what is bad.
6. 替他人擦屁股；替别人干苦差事If you are left holding the baby, you are put in a situation where you are responsible for something, often in an unfair way because other people fail or refuse to take responsibility for it.
e.g. You go off round the world, and leave me to hold the baby.你满世界地跑，把苦差事都扔给我。
in AM, use 美国英语用 be left holding the bag