Ppsn
公用分组交换网
🗣️ 情景例句
I think you're doing the right thing. Taking your time.
我觉得你们做得对。慢慢来。
Father has prescribed a course of action for my bother.
父亲指使弟弟的行动。
The geologist needs to know what rocks the drill has reached,
地质学家需要知道钻头已经到达什么样的岩层，