pump
Definition
A device that draws or squeezes fluid or air from one location to another; also, to operate such a device.
中文 将液体或空气从一处抽取或挤压到另一处的装置，也指操作这样的装置。
Example
"She used a hand pump to inflate the bicycle tire."
A device that draws or squeezes fluid or air from one location to another; also, to operate such a device.
中文 将液体或空气从一处抽取或挤压到另一处的装置，也指操作这样的装置。
"She used a hand pump to inflate the bicycle tire."