traffic signals
buy signals
sell signals
signal strength
signal processing
emergency signals
signal detection
signal analysis
warning signals
signal transmission
she signals her approval with a nod.
the traffic lights signals when to stop.
he signals for help from a distance.
the coach signals the players to start.
birds use various sounds to signals danger.
she signals her intent to leave the meeting.
the scientist signals a breakthrough in research.
he signals his friends to join him.
the dog signals its owner to play.
she signals her discomfort during the conversation.
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