Boundedness
[计] 有界性
🗣️ 情景例句
And in a short campaign
而且这一场短暂的竞选
I'm writing to a friend of mine in South American.
我在写信给一个美国南部的朋友。
I got up early and bought thirty-seven cards.
我早早起了床，买来了37张明信片。