n.火箱；燃烧室；火警匣
Make room for some sort of a firebox or burner. 给燃烧室或者燃烧器留些空间。
Before the LNG comes into the auto-mobile firebox, it needs to be returned to normal temperature. 在液化天然气在进入燃烧室燃烧之前需恢复到常温，因而释放出大量的冷能。
