Servopump
[化] 伺服泵
🗣️ 情景例句
There are a lot of beggars on the street, how can we help them?
街上的乞丐那么多，我们怎么能帮助他们呢？
Would you please give us a rough idea of the quantity you require?
请告知你方大概要订多少？
Somebody's knocking at the door. I'll answer it.
有人在敲门，我去开。