Arquad
卤化烷基三甲基铵(阳离子表面活性剂), 季铵盐萃取剂
🗣️ 情景例句
I'd like to say something first.
我想先说几句话。
A fool may give a wise man counsel.
愚者千虑，必有一得。
he submits himself to a more ruthless discipline than any critic dreamed of,
就应按任何评论家想像不到的无情规范约束自己去写作；