Or model
[计] 运筹学模型
🧩 词语组成解析
or
[ɔ:,ə]
conj. 或，或者;还是;不然，否则;左右;
prep. <古、诗>在…之前，比…更早;
n. [纹章]黑金色、黑色;
🗣️ 情景例句
He took French leave.
他不辞而别。
Where'd you come from?
你从哪冒出来的啊？
Think carefully before you act.
三思而后行。