Boundedness
[计] 有界性
🗣️ 情景例句
Yes, I think so.
对，我想是的。
Please send us all the data concerning your Hero Brand fountain pens and ball pens, so we can introduce your products to our customers.
请寄给我们有关你方英雄牌自来水笔和圆球笔的资料，以便我们向顾客介绍你们的产品。
Did you give our English teacher a card for Teachers' Day?
你给了我们的英语老师教师节贺卡了吗？