Fk
abbr. 外键（foreign key）
🗣️ 情景例句
That sounds like a good idea.
似乎是个好主意。
At ease.
休息。
My parents used to live in South America and I used to fly there from Europe in the holidays.
我的父母曾经住在南美洲，所以假期里我常从欧洲乘飞机到他们那里。