The mankind activity, such as aquaculture, salt industry, exerts an influence on the mud flat ecosystem.

人类开发活动如水产养殖、盐业生产等对滩涂生态系统产生严重影响。

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The simple notional and remarkable source consists in the complexity that mankind feel activity.

简单观念的不简单性根源在于人类感觉活动的复杂性。

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Human civilization, the progress of mankind, all human creation, all brilliance achievements are the results of the human thinking activity.

人类文明，人类进步，人类的一切创造，都是人类思维活动的辉煌成果。

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Without the prospect of earning a profit, all activity above bare subsistence would cease (or would never have occurred) and mankind might still be in the caves.

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