Fk
abbr. 外键（foreign key）
🗣️ 情景例句
Garbage and chemical waste are destroying our water.
垃圾和化学废物正在破坏我们的水资源。
It is not the gay coat that makes the gentleman.
君子在德不在衣。
Jim, where's your father?
吉姆，你爸爸在哪儿？