原油是碳氢化合物的混合物，是各种形式的有价值的这个自然。

Crude oil is a mixture of various hydrocarbons and is valuable in this natural form.

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液化石油气是一种具有高热值的碳氢化合物的混合物，可以用来发电。

Liquefied petroleum gas (LPG) is a kind of hydrocarbon compound with high heat value, can be used for power generation.

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矿物油是一种混合物，由长短不一的碳链和几个碳氢化合物混合而成。

The mineral oils are a mix of several hydrocarbons with different length of carbon chain.

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