telegram code

例句：

1. 1. The sender must enter the correct message and then press the send button to send a telegram message.
   发送者必须输入正确的信息，然后按下发送按钮发送电报消息。
2. 2. The telegram code was used to encode messages that were sent over long distances.
   电报代码被用来编码远距离发送的信息。
3. 3. The telegram codebook contains all the codes needed to send and receive messages over the telegraph network.
   电报代码本包含所有发送和接收电报网络中信息所需的代码。