Variable(displacement)pump
[化] 变量泵
🗣️ 情景例句
How was your trip?
你这一趟旅途还好吧？
There is no sense in criticizing him.
批评他也没有用。
I insist on taking proper food for this expedition. The men often fall ill and suffer fever, so I have decided to take live animals.
我坚持认为，这次探险要携带合适的食物。水手经常生病发烧，因此我决定带活的动物。