Pos
[计] 销售点, 位置, 正, 主操作系统
🗣️ 情景例句
I'm sorry you have to leave so soon.
很遗憾你不能多呆会儿。
A standard one. Replacement during the first year if all rules for proper use have been followed.
有一个原则，如果在一年内符合各种使用规定，就可更换。
Is this a book?
这是一本书吗？