an act of breathing out the air or smoke that is in your lungs; an amount of air or smoke that you breathe out 呼出,吐出(肺中的空气、烟等);呼气 Carbon dioxide is eliminated from the body during exhalation. 呼气时二氧化碳从体内排出。 Each exhalation was visible in the cold air. 每次呼气在冷空气中都是可见的。