Variable(displacement)pump
[化] 变量泵
🗣️ 情景例句
We have strict procedure around here and we expect all of our staff to follow it.
我们这儿有非常严格的工作程序，希望全体员工遵守。
You should be more patient with others.
你应该多容忍他人一些。
He slept very well for the first two nights,
头两天晚上，他睡得非常好。