名词
中文翻译：公共用户网络
同义词：
['public network', 'public network system', 'public network infrastructure']
例句：
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1. The common user network is essential for communication between different regions.
公共用户网络对于不同地区之间的通信至关重要。
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2. The common user network provides a reliable and secure connection for users worldwide.
公共用户网络为全世界的用户提供了一个可靠和安全的连接。
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3. The common user network has been expanding rapidly in recent years, covering more and more areas.
公共用户网络近年来发展迅速，覆盖的范围越来越大。