Cnf
abbr. 合取范式（conjunctive normal form）；成本加运费（cost and freight, 等于CFR）
🗣️ 情景例句
then you've got to smile first.
你就得先笑一笑。
Every couple is not a pair.
同床异梦，貌合神离。
Let me take another look at our requirements.
那我们看看我们的需要量有多少