When a petrol station burns down, you don't just want to know who dropped the cigarette; you want to know why all the combustible fumes escaped.
当一座加油站被烧毁，你不仅想知道是谁扔下了烟头，你还想了解所有易燃气体的泄露原因。
2
The inner envelope filled with helium in the head section of the blimp and the third built-in airbag at the tail is filled with ethane combustible gas.
飞船头部的内置气囊中充满了氦气，而置于尾部的第三节内置气囊则充满了乙烷可燃气体。
3
The ability of coal to release a combustible gas has long been known.