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.
当它检测到一个特殊的手势时，它就会发送一个消息给你选中的特殊的对象。
When it recognizes a particular gesture, it sends a message to the object of your choice.
根据我们的表情，手势和其他肢体动作将消息发送到我们周围的人。
By our expressions, gestures, and other body movements to send messages to people around us.
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