fire box shell

例句：

1. 1. The firebox is designed to protect the flames from the surrounding environment.
   这个火箱设计用来保护火焰免受周围环境的影响。
2. 2. The firebox shell was made of a durable material that could withstand high temperatures.
   这个火箱外壳是由一种耐用的材料制成的，能够承受高温。
3. 3.The firebox shell was carefully crafted to ensure a secure and safe escape route for the occupants.
   这个火箱外壳被精心制作，以确保为居住者提供一个安全且可靠的逃生路线。