1. The plunger or piston of a force pump or hydraulic press. 
   活塞压力泵或水压机内的柱塞或活塞
2. rotary plunger vacuum pump 
   滑阀真空泵
3. When you have finished making the pieces of the garment, pull each one into shape and press firmly with a steam iron. 
   当你做好外套的每一片后，把它们抻平成型然后用蒸汽熨斗熨一熨。
4. One that dashes, especially the plunger of an ice-cream freezer. 
   猛冲者猛冲的人或物，尤指冰淇淋凝固搅拌器
5. A game played on a device in which the player operates a plunger to shoot a ball down or along a slanted surface having obstacles and targets. 
   弹球戏在一种装置下进行的游戏，在该装置中玩球者操作一个活塞将球击倒至或沿着一个有障碍物或目标物的倾斜表面

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