Column constraint
[计] 列约束
🧩 词语组成解析
column
['kɑləm]
n. 纵队，列;圆柱;专栏;
🗣️ 情景例句
I'm sorry I'll have to pass.
很遗憾我得错过这回了。
On coming home, he switched on the television.
他一到家就打开了电视。
We're through.
我们完了！