Variable(displacement)pump
[化] 变量泵
🗣️ 情景例句
I took him to Philip's office yesterday for a checkup.
我昨天带他到Philip的办公室去做检查。
They've been married for quite a few years.
他们结婚好多年了。
The snow will be very heavy in some places.
部分地区有大雪。