protective fire

例句：

1. 1. The building was severely damaged by the protective fire.
   这座建筑因保护性火灾而严重受损。
2. 2. To prevent such a disaster, it's important to take protective fire measures.
   为了预防此类灾难，采取保护性防火措施至关重要。
3. 3. The firefighters were able to put out the protective fire before it could spread further.
   消防员们能够及时扑灭保护性火灾，防止火势蔓延。