Fk
abbr. 外鍵（foreign key）
??? 情景例句
It will take less than 5 minutes to check out.
退房最多只需5分鐘。
Our stock of this commodity is limited, please place your order without delay.
我方此類商品的存貨有限，請盡快訂貨。
He drives more carefully than you.
他開車比你小心。