Hydrocarbon: an organic compound (as acetylene or butane) containing only carbon and hydrogen and often occurring in petroleum, natural gas, coal, and bitumens.

• 碳氢化合物:一种有机化合物(例如乙炔或丁烷),只包含碳和氢两种物质,通常出现在石油、天然气、煤炭和沥青中。