Fk
abbr. 外键（foreign key）
🗣️ 情景例句
Absolutely!
那当然！
I know the boy whose father is a merchant.
我知道那个男孩的父亲是商人。
Two men who recently spent five days on a coral island wished they had stayed there longer.
最近有两个人在一座珊瑚岛上呆了5天，他们真希望在那儿再多呆一些日子。