Consumers also have to worry about the effects of pollution on food production.

消费者还不得不担心污染对食品生产的影响。

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One eof the main effects of human activity on an area is water pollution.

人类活动对一个地区的主要影响之一是水污染。

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One eof the main effects of human activity on an area is water pollution.

人类活动对一个地区的主要影响之一是水污染。

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