Fcv
abbr. fill-and-check valve 注入与检查阀门
🗣️ 情景例句
Lacks social skills.
缺乏社交能力。
Modesty is not only and ornament, but also a guard to virtue.
谦逊不仅可增添光彩也可以维护美德。
You're a joke!
你真是一个小丑！