Boundedness
[计] 有界性
🗣️ 情景例句
He applied to Columbia,
他申请了Columbia大学。
Have but few frieds,though many acquaintances.
结交可以多，朋友应宜少。
But there was no time to think.All her other friends were now outside the door.
但来不及去想了。其余的朋友现在也全都到门外了。