Centos
abbr. 社区企业操作系统（Community Enterprise Operating System）
🗣️ 情景例句
I'm glad you came. You're welcome any time.
我很高兴你能来。随时都欢迎你们来。
A friend is never known till a man have need.
不到患难时，永远不能认识真正的朋友。
The same to you.
你也一样。