Quaternarization
[化] 季铵化作用; 门秀金反应
🗣️ 情景例句
I'm Elsa Tobin. How do you do?
我叫Elsa Tobin ，你好。
There are 16 participants here today.
今天有16位参会者。
the bank must recognize its customer's signature.
因为银行有责任辩认出其储户的签名。