按照每桶石油50美元计算，有争议地区的石油收入总计300亿美元。
The oil revenues from the reserves in the disputed area total some US$30 billion, based on calculations at US$50 per barrel.
中国石油天然气公司在非洲成为一股力量，其中包括诸如苏丹在内的有争议地区。
PetroChina has become a force in Africa, including, controversially, Sudan.
我用红色标出的地区在地图上被当做中国的一部分，但是实践上是有争议地区，或是被其他国家管理的地区。
The areas I've highlighted in red are marked as Chinese on the map but actually are in dispute or are administered by other countries.
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