珠江三角洲地区是企业集群的主要聚居地之一。

There are many clusters in the Pearl River Delta area.

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作者选取了珠江三角洲地区的港口作为研究对象。

Pearl delta has been selected as the subject of our research.

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作者选取了珠江三角洲地区的港口作为研究对象。

Pearl delta has been selected as the subject of our research.

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