Saudi Arabia is the world's top oil exporter.

沙特阿拉伯是世界上最大的石油出口国。

And they hope that one day the car will be produced nationally, a big dream in a country that was once one of the world's top oil producers.

他们希望有一天这款车能在全国范围内生产，对于一个曾经是世界最大产油国之一的国家来说，这是一个远大的梦想。

For years, Tom Wilson says that one of the world's top oil trading centres was actually in a country that doesn't produce any oil at all.

汤姆·威尔逊多年来一直表示，世界最大的石油贸易中心之一实际上位于一个根本不生产任何石油的国家。

As abandoned wells in most of the world's top oil producers have yet to be extensively counted or surveyed, the global emissions of all abandoned wells is likely much, much higher.

由于世界上大多数顶级石油生产国的废弃油井尚未被广泛统计或调查，因此所有废弃油井的全球排放量可能要高得多。