chain and barrel

例句：

1. 1.The workers were chained to the floor while the machine was being repaired.
   当机器被修理时，工人们被锁在地板上。
2. 2. The old man used to keep a barrel of water in his cellar.
   那位老人过去常在他的地窖里存放一桶水。
3. 3. The police found a chain and a barrel near the riverbank.
   警察在河岸附近发现了一个链条和一个桶。