Each one contains 80,000 gallons of light crude oil.

每罐装有80,000加仑轻质原油。

It also allows Russia to increase its output of condensate, a type of light crude.

该协议还允许俄罗斯增加凝析油（一种轻质原油）的产量。

However, both of them are benchmarks for light crude oil trading, most of the crude oil imported to China is medium.

然而，这两个基准主要是为轻质原油贸易制定，进口到中国的则大部分是中质原油。