肾脏的英文是"kidney"，来源于拉丁语"ren"，意为"海水"，因为它外形类似于两个海螺。例句：

Her kidneys are failing. 她的肾脏衰竭了。

The doctor performed a kidney transplant. 医生做了一个肾脏移植手术。

The medication is harmful to the kidneys. 这种药对肾脏有害。