Fcv
abbr. fill-and-check valve 注入与检查阀门
🗣️ 情景例句
Oh, you look so beautiful, Susan. My granddaughter.
啊 ，真漂亮 ，Susan 我的好孙女。
I ought to be on time.
我应该准时到。
There are many stars in the sky.
天上有很多星星。