petroleum coal的用法和樣例：
例句
- Any of several highly volatile, flammable liquid mixtures of hydrocarbons distilled from petroleum, coal tar, and natural gas and used as fuel, as solvents, and in making various chemicals.
石腦油一種高度揮發(fā)性的易燃液態(tài)碳氫化合物混合物，從石油、煤焦油和天然氣中提煉出來(lái)，并用作石油、溶劑和制造各種化合物中
