service radius

例句：

1. 1.The company's service radius covers all major cities in the country.
   该公司的服务半径覆盖了全国的主要城市。
2. 2. The new technology can reach a service radius of up to 500 kilometers.
   这项新技术的服务半径可达500公里。
3. 3. The service radius is expanding rapidly, making it easier for customers to access our services.
   服务半径正在迅速扩大，使得客户更容易访问我们的服务。