kidneys ['kɪdnɪz]

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附加级

肾形矿脉；肾，肾脏( kidney的名词复数 )；（可食用的动物的）腰子

The function of the kidneys is to excrete wastes from the body. 肾的功能是排泄人体里的废物。
She got a very dangerous disease of kidneys. 她得了一种很危险的肾病。