Cnf
abbr. 合取范式（conjunctive normal form）；成本加运费（cost and freight, 等于CFR）
🗣️ 情景例句
I can speak Shanghai dialect other than Cantoness.
除了广东话，我还能讲上海话。
A duck will not always dabble in the same gutter.
一只鸭子不会常在同一条沟中玩水。
What time did you have it?
你们什么时候开的会？