一位雷达操作手向其它乘员做了个手势，以示他已经知道是谁发出的这个消息。

A radar operator makes a sign to the others, showing that he has understood who sent the message.

youdao

一位雷达操作手向其它乘员做了个手势，以示他已经知道是谁发出的这个消息。

A radar operator makes a sign to the others, showing that he has understood who sent the message.

youdao