Pfs
abbr. porous friction surface(d) 渗透摩擦面
🗣️ 情景例句
That's all right.
没关系。
What month is next month?
下个月是几月份？
At that moment, a large black car with four officers inside it, stopped at the camp gates.
正在此时，一辆黑色大轿车在军营门口停了下来。里面坐了4个军官。