steam reserve

例句：

1. 1. The factory has a large steam reserve for its next production run.
   这家工厂有充足的蒸汽储备，以备下次生产使用。
2. 2. The engineer used the steam reserve to power the new machine.
   工程师利用蒸汽储备为新机器提供动力。
3. 3.The farmers are concerned about the shortage of steam reserves in the region.
   农民们担心该地区的蒸汽储备短缺。