Derivatization
[医]衍生（作用）, 衍生化, 导数化
🗣️ 情景例句
Hi, there!
你好！
My cell phone's out of batteries.
我手机没电了。
Mum or dad, of course, provide a regular supply of pocket money, but uncles and ants are always a source of extra income.
爸爸妈妈当然经常给孩子零花钱，但是，叔舅婶姨也是孩子们额外收入来源。