The baby needs a clean diaper. 宝宝需要干净的尿布。 change a diaper 换尿布 Do you know how to change a diaper? 知道怎么换尿布吗？ I packed extra diapers for the road trip. 长途车上我准备了额外的尿布。 I struggled to change nappies.

“baby ”是宝贝，“change”是“换”的意思，"change the baby"难道是“换个宝宝”？ “change” 除了改变的意思，还有一个意思是 ...