City and merchandise circulation are two concepts that have close connection.
城市与商品流通是紧密相连的两个概念。
The circulation of borrowing privileges has four major forms, which are worth close attention.
借阅权流转制度有四种主要形式。这种制度值得引起人们的高度重视。
The circulation of borrowing privileges has four major forms, which are worth close attention.
借阅权流转制度有四种主要形式。这种制度值得引起人们的高度重视。
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