Osi
[计] 开放式系统互连, 开放式系统互连协议组, 开放式系统互连参考模型
🗣️ 情景例句
I think I have fallen in love with someone.
我恋爱了。
I guess he's about 30.
我猜他大概30岁。
Whoever comes will be welcomed.
来的人我们都欢迎。