Social educational activities have a long history as human history, and it comes into being with the production of human society.

社会教育活动与人类历史一样悠久，它是随着人类社会的产生而产生的。

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However, as a source and a sink as well, soil is being changed because of human activities, such as changing land use and applying fertilizers.

人类通过改变土地利用方式，大量施用化肥等活动正在改变着土壤作为温室气体源和汇的强度。

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Black Friday can no longer do his criminal activities because he has lost all worth of himself as a human being.

NPR: Excerpt: 'The Mysterious Secret of the Valuable Treasure'