Pbx
[计] 专用小型交换机
🗣️ 情景例句
I don't think this is my meal.
我想这不是我点的。
I'm a graduate of Yale University, I have an M.S.degree.
我是耶鲁大学的毕业生，我有理学硕士学位。
when a significant number of people are living permanently in space.
如果有相当数量的人永久性地住在太空，