trunk subscriber

例句：

1. 1. The company's mainline subscribers are loyal customers who regularly purchase its products.
   该公司的主要订阅者是忠实客户，他们定期购买公司的产品。
2. 2.The trunk subscriber is responsible for maintaining the network's stability and ensuring that all traffic is routed through it.
   主干订阅者负责维护网络的稳定性，确保所有流量都经过它。
3. 3. The trunk subscriber is also responsible for monitoring the network's performance and reporting any issues to the network administrator.
   主干订阅者还负责监控网络的性能，并向网络管理员报告任何问题。