frontal fire

例句：

1. 1.The patient was in a frontal firewhen the doctor arrived.
   当医生到达时，病人正处于前额火焰状态。
2. 2. The frontal fire spread quickly across the city.
   前额火焰迅速蔓延至整个城市。
3. 3. The frontal fire was caused by a lightning strike.
   前额火焰是由雷击引起的。