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废品的回收

发布时间：2016-02-29 编辑：查字典英语网小编

　　people plant a great number of young trees in the mountains.when the trees grow big and tall enough,they are cut down by workers and carried out of the mountains to the paper mill where fine paper is made from wood.

　　then it is taken to every corner of the country and used for different purposes.some people use paper to copy writing,others use it to write something such as letters,reports and articles.

　　when paper turns out to be of no use,the waste paper is collected and retreated in the recycling factory before being put into use again.

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