他把水倒进无把玻璃杯，然后一饮而尽。

He poured water into the ___tumbler and drank it all at once.

这位杂技演员在舞台上连续做了五个后空翻。

The ___tumbler performed five consecutive backflips on stage.

只有当锁中的制栓正确对齐时，钥匙才能转动。

The key can only turn when the ___tumbler in the lock aligns properly.