Centrex
[计] 市话交换分局, 中央交换机
🗣️ 情景例句
Good day also to you.
再见！
What a shame! Or That's too bad.
真是遗憾。
They put their hands behind their backs, so you can't see their hands.
他们将手放在背后，这样你就看不见他们的手了。