- 重点词汇
- 相关例句
It was soon found that the kerosene straight from crude oil was sometimes not very satisfactory.
不久就发现原油中的直馏煤油有时并不使人满意.
词典精选例句
The term crude oil is restricted to liquid mixtures of hydrocarbons and related compounds.
原油这个术语是指烃类和与烃类有关的化合物的液态混合物.
词典精选例句