Quaternarization
[化] 季铵化作用; 门秀金反应
🗣️ 情景例句
A man can develop his mind by reading.
读书增进个人的智慧。
I think gray hair makes you look rather distinguished.
我觉得你灰白的头发使你看上去很严肃。
As the man came near, the prisoner knocked him to the ground with a sharp blow.
当这个人走近时，战俘一拳把他打倒在地，