Fcv
abbr. fill-and-check valve 注入與檢查閥門
??? 情景例句
Uh ... I give up.
嗯……我放棄猜。
Whoever.
無論邀請誰。
There's no need for that. We'll have dinner another time.
不必為那件事慚愧。我們改個時間再共進晚餐吧。