Fcv
abbr. fill-and-check valve 注入与检查阀门
🗣️ 情景例句
Nothing to worry about.
没有什么好担心的。
I hope I'm not in the way.
我希望没有造成妨碍。
They leave unwanted objects in drawers, cupboards and attics for years,
他们在抽屉里，碗柜中、阁楼上堆放着一些不用的东西，一放就是好几年，