Centrex
[计] 市话交换分局, 中央交换机
🗣️ 情景例句
I can see that.
这一点我明白。
I'll leave the house at 8:00 and get to the office at 8:30.
我将在8:00离开房子并且在8:30到办公室。
If there had not been a hard layer of rock beneath the soil, they would have completed the job in a few hours.
如果不是因为土壤下面有一层坚硬的岩石，他们的营救工作仅用几个小时就可以完成了。