"plunger" 的定义和意义

Plunger

柱塞

a tool with a rubber cup fixed to a handle, used for clearing blocked pipes or drains

柱塞

someone who dives (into water)

柱塞

mechanical device that has a plunging or thrusting motion

柱塞

someone who risks losses for the possibility of considerable gains

例子

He used a plunger to force out the clog in the drain.

During the piston pump's operation, the plungers reciprocated to create suction and discharge fluid.

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