请把这些玻璃杯洗干净，晚餐时要用。

Please wash these ___tumblers clean for dinner.

杂技团的翻跟斗演员让孩子们惊叹不已。

The children were amazed by the ___tumblers at the acrobatic show.

锁匠调整了锁芯里的弹子，现在钥匙能顺畅转动了。

The locksmith adjusted the ___tumblers in the lock cylinder, and now the key turns smoothly.