breakdown mill

例句：

1. 1.The old mill was a symbol of the town's industrial past.
   这个旧磨坊是小镇工业历史的符号。
2. 2.The engineer had to fix the broken down mill before it could be used again.
   工程师必须在机器再次使用之前修复这台破旧的磨坊。
3. 3.The mill was so old that it couldn't function properly, causing a breakdown in the production process.
   这台磨坊太老旧了，无法正常工作，导致生产过程出现故障。