Variable(displacement)pump
[化] 变量泵
🗣️ 情景例句
and take care of Max and continue my career.
一面照顾孩子， 同时继续我的事业。
On many farms you'll find cows and chickens.
在许多农场上你将发现奶牛和鸡。
In the library she has got books on many different subjects.
在图书馆里她准备了各种科目的书籍。