Ceos
abbr. communications enterprise operating system 通信企业操作系统; comprehensive electronic office software 综合电子办公软件
🗣️ 情景例句
Our teacher drills us in English.
我们老师让我们反复操练英语。
A word spoken is past recalling.
一言既出，驷马难追。
I have just finished the book.
我刚刚读完这本书。