Pfs
abbr. porous friction surface(d) 渗透摩擦面
🗣️ 情景例句
When will you be through with your homework?
你的家庭作业什么时候可以做完？
Don't forget to help him.
不要忘记帮助他。
Such things provide an excellent outlet for pent up creative energy,
这些东西为人们潜在的创造力提供了一个绝妙的用武之地。