Cnf
abbr. 合取范式（conjunctive normal form）；成本加运费（cost and freight, 等于CFR）
🗣️ 情景例句
on the patio this morning.
要在院子 。
The master always exacts quality work from his students.
老师常常要求学生们认真踏实的完成功课。
What was the order number?
订单号码多少？