单词 | plunger |
释义 | plungernoun plung·er ˈplən-jər : one that plunges: such as a : diver b : a reckless gambler or speculator c(1) : a sliding reciprocating piece driven by or against fluid pressure especially : piston (2) : a piece with a motion like that of a ram or piston d : a rubber suction cup on a handle used to free plumbing traps and waste outlets of obstructions |
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