我们需要停下来加些柴油。

We need to stop for some ___diesel.

其次，如果汽油价格上涨，人们会购买使用柴油的汽车。

Secondly, if the price of petrol is increased, people will buy cars that run on ___diesel.

许多现代卡车使用柴油发动机以提高燃油效率。

Many modern trucks are powered by ___diesel engines for better fuel efficiency.