Pfs
abbr. porous friction surface(d) 渗透摩擦面
🗣️ 情景例句
OK. Do you know when you'll come and visit?
好啊。你知道几时还会再来拜访我们吗？
A candle lights others and consumes itself.
蜡烛焚自身，光亮照别人。
Excuse me! Is this your bike?
打扰一下。这是你的自行车吗？