Fdm
[计] 频分多路传输
🗣️ 情景例句
and come back Sunday.
然后在星期天回来。
Relax!
放松一下！
It did not take the firefighters long to put out the fire, and they at once started to look for causes of the fire.
消防队员没花多时间就把大火扑灭了，他们马上开始调查火灾发生的原因。