extinquishing grass fire

例句：

1. 1.The firefighters were trying to extinguish the flames with water.
   消防员们正试图用水扑灭火焰。
2. 2.The blaze was so intense that it could not be extinguished by any means.
   这场大火如此猛烈，无法用任何方法扑灭。
3. 3.The scientist used a special chemical to extinguish the fire in the laboratory.
   科学家使用了一种特殊的化学物质来扑灭实验室里的火。