sub network

例句：

1. 1. The company uses a sub network to connect its servers.
   该公司使用子网络来连接其服务器。
2. 2. The sub network is responsible for managing the traffic between different departments.
   子网络负责管理不同部门之间的流量。
3. 3. The sub network provides a secure and reliable connection for remote workers.
   子网络为远程工作者提供了一个安全且可靠的连接。