首先，世界多数财大气粗的油公司，尤其是西方的石油大鳄，不断被有希望勘探和开发出油田的地域排除在外。

First, the world's most deep-pocketed oil companies, the Western oil majors, are increasingly excluded from the most promising areas for exploration and development.

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俄罗斯到现在为止希望将石油排除在关税同盟之外。

Russia wants to keep oil out of the union for now.

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阿斯卡波察尔科行政区的石油精炼厂在1991年被关闭了，该炼油厂曾被估测出排除的污染物占墨西哥空气总污染物的7%，关闭之后，它的大部分场地被开垦重建成公园。

The oil refinery in the borough of Azcapotzalco, which was said to belch out up to 7% of Mexico City’s air pollution, was shut in 1991. Some of its land was converted into a park.

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