combustion area

例句：

1. 1.The firefighters were working in the burning area to extinguish the flames.
   消防员们在燃烧区工作，以扑灭火焰。
2. 2.The research team focused on the combustion area of the engine to improve its efficiency.
   研究团队专注于发动机的燃烧区，以提高其效率。
3. 3.The safety regulations require that the combustion area be well-ventilated to prevent accidents.
   安全规定要求燃烧区通风良好，以防止事故。