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单词
plunger
释义
plunger
NOUN
C
/ˈplʌndʒə/
1
an object used for pulling dirt out of a sink , bath etc that is blocked. It consists of a rubber cup fixed to a short stick . （疏通堵塞的洗涤池、浴缸等的）手压皮碗泵，橡胶吸盘
2
a part of a machine or piece of equipment that you push down （机器的）柱塞，活塞