Quaternization
(=quaternarization)季铵化作用, 成季碱反应
🗣️ 情景例句
Away from the telephones and account books.
远离电话和帐簿。
There's something wrong with the phone.
电话出了点儿毛病。
Ducks know how to swim when they are born.
鸭子天生会游泳