telegraph-grade channel

例句：

1. 1. The company has developed a telegraph-grade channel for remote workers to communicate with their colleagues.
   该公司为远程工作者开发了一个与同事沟通的电报级通道。
2. 2.The new telecommunications channel will provide faster and more reliable service than the old one.
   新的通信通道将提供比旧的更快、更可靠的服务。
3. 3.The government is investing heavily in developing telegraph-grade channels to improve communication between different regions.
   政府正大力投资于发展电报级通道，以改善不同地区之间的通信。