Some natural resources are around us, such as water and air.

一些自然资源在我们周围，例如水和空气。

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Air, water and sunlight are usually viewed at the most important natural resources.

空气，水和阳光通常被看作是最重要的自然资源。

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Air, water and sunlight are usually viewed at the most important natural resources.

空气，水和阳光通常被看作是最重要的自然资源。

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