Qīng / zhì / shí / yóu / biàn / yú / yùn / shū / , / yīn / cǐ / cháng / bèi / yòng / yú / shēng / chǎn / rán / liào / 。轻质石油便于运输,因此常被用于生产燃料。Light petroleum is easy to transport, so it is often used to produce fuel.