Handpump
手压泵
🗣️ 情景例句
What you're saying is, in order for this center to succeed,
你刚才所说的意思是为了使中心能成功，
Bite the hand that feeds one.
恩将仇报。
It is now being used indifferently for both.
人们现在正漫不经心地把知识用于这两个方面，