Ccsa
[计] 公用控制交换网
🗣️ 情景例句
Let's have a talk about it in advance.
我们事先商量一下。
It is an evil sign too see a fox lick a lamb.
狐狸舔羔羊，这是凶迹象。
He's not in his office at the moment.
他现在不在办公室里，