不明飛行物體 bùmíngfēixíngwùtǐ unidentified flying object Origin Definitions Defs Strokes Stroke Words Sentences Sents 不明 bùmíng adjective unknown not clear; unknown; uncertain飞行 飛行 fēixíng noun flight the act or process of flying; aviation物体 物體 wùtǐ noun object a physical thing or substance that occupies space