浴室的下水道堵了，我需要找个皮搋子来疏通。

The bathroom drain is blocked, I need to find a ___plunger to unclog it.

他在赌场里是个十足的赌徒，每次都把全部积蓄押上。

He's a real ___gambler at the casino, betting his entire savings every time.

水泵里的活塞需要定期更换以保证正常运作。

The ___plunger in the water pump needs regular replacement to ensure proper functioning.