hū yǐn hū xiàn
忽隐忽现
影子在墙上忽隐忽现
◎ 忽隐忽现 hūyǐn-hūxiàn [flicker;suddenly it appeared and disappeared] [将灭的灯火的]最后的闪烁,时而消失时而出现 影子在墙上忽隐忽现