美国大部分地区以保护环境的名义禁止石油勘探和生产活动。

Vast areas of the United States are off-limits to oil exploration and production in the name of environmental protection.

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埃达·克斯的油气勘探和生产业务只要集中在西非和中东。

Addax's oil and gas exploration and production activities are focused on west Africa and the Middle East.

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油价低伏时，勘探和生产就变得昂贵，但这些公司却能依靠加油站这类零售资产获得高额利润。

When the price of oil is low, exploration and production is expensive, but companies can rely on retail assets such as gas stations to benefit from the high profit margins at the pump.

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