不要点燃火柴来寻找燃气泄露处。
现有的燃气表没有燃气泄露报警泄漏控制功能，只是作为燃气使用数量的测量仪表。
The existing gas meter which has no functions of gas leak alarm and control is only used as a measuring instrument for the use amount of the gas.
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。
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.
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