mourn.fuladj.(形容词)Feeling or expressing sorrow or grief; sorrowful.悲伤的:感到或表现出悲痛的;伤心的Causing or suggesting sadness or melancholy:引起或使人悲伤或者忧郁的:例句:the mournful sound of a train whistle.火车低郁的汽笛声【引伸】mourn.fullyadv.(副词)mourn.fulnessn.(名词)