The postal industry is a traditional natural monopoly industry with obvious network characteristics.

邮政产业属于传统意义上的自然垄断产业，具有明显的网络特性。

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The postal industry is a traditional natural monopoly industry with obvious network characteristics.

邮政产业属于传统意义上的自然垄断产业，具有明显的网络特性。

youdao