Pfas
abbr. personal fall arrest system 防坠落系统; [医][=performic acid-Schiff reaction]过氧甲酸-席夫反应
🗣️ 情景例句
That's wrong.
这是错的。
Would you please give us a rough idea of the quantity you require?
请告知你方大概要订多少？
That's right.
对。