manual data relay centre

例句：

1. 1.The manual data relay centre is responsible for transmitting and receiving data.
   手动数据中继中心负责传输和接收数据。
2. 2.The manual data relay centre is an essential tool for businesses to manage their data.
   手动数据中继中心是企业管理数据的重要工具。
3. 3.The manual data relay centre helps to ensure that data is transmitted accurately and securely.
   手动数据中继中心有助于确保数据传输准确且安全。