所以，尽管埃克森美孚能够开采出石油，但却不能保证公司的冶炼部门将原油冶炼成汽油或燃料油后就能赚钱。
So even though ExxonMobil pumps oil, it can't guarantee that its refining unit will be able to profitably process a barrel into gasoline or heating oil.
他没有为降低汽油使用量的计划提供强制执行的保证。
He failed to provide his plan to reduce petrol consumption with any teeth.
充电式混合动力汽车只能保证第一次充电是全电动的；最终还是要使用汽油引擎。
Plug-in hybrid cars can only travel so far on a charge; eventually, the gasoline engine kicks in.
应用推荐