油藏是珍贵的地下石油堆积物，而油田是由一个或多个油藏所组成的地下区域。

Oil pools are valuable underground accumulations of oil, and oil fields are regions underlain by one or more oil pools.

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通过使用通透屋顶花园，使得地下区域被曝露在阳光下。

By using punctured roof gardens, seemingly underground areas are exposed to light.

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一种井系统，包括：主井筒，其从地面朝向地下区域延伸；

A well system includes a main wellbore extending from a terranean surface toward a subterranean zone.

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and there's an underground area

我们还有一部分地下的区域，

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