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    Vapor
    moisture in the air that can be seen; fog; mist بخار هوا که می توان آن را دید ، مه ، غبار a. Scientists have devised methods for trapping vapor in bottles so they can study its make-up. b. He has gathered data on the amount of vapor rising from the swamp. c. A vapor trail is the visible stream of moisture left by the engines of a jet flying at high altitudes.
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