boiler drum

例句：

1. 1.The engineer inspected the boiler drum for any signs of damage.
   工程师检查了锅炉筒，看是否有损坏的迹象。
2. 2. The fireman used a ladder to reach the boiler drum and extinguish the fire.
   消防员使用梯子到达锅炉筒，扑灭了火。
3. 3. The engineer had to repair the boiler drum before the project could continue.
   工程师必须在项目继续之前修理锅炉筒。