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1. Oxford American Dictionary

   coal gas

   • IPA[ˈkōl ˌɡas]

   美式

   • n.
     a mixture of gases (chiefly hydrogen, methane, and carbon monoxide) obtained by the destructive distillation of coal and formerly used for lighting and heating.

   • noun: coal gas

2. • 更多解釋

   coal gas

   • IPA[ˈkəʊl ɡas]

   英式

   • n.
     a mixture of gases (chiefly hydrogen, methane, and carbon monoxide) obtained by the destructive ...

   Oxford Dictionary