名词
中文翻译：Unknown
同义词：
['minor telegraph', 'secondary telegraph']
例句：
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1. The sub-telegraph system is used to transmit information between two points in the network.
副电报系统用于在网络中的两点之间传输信息。
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2. The sub-telegraph line was damaged during the storm, causing delays in communication.
暴风雨期间损坏了副电报线路，导致通信延误。
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3. The sub-telegraph operator was responsible for monitoring and maintaining the network's stability.
副电报操作员负责监控和维护网络的稳定性。