n.卧铺（通常以复数形式出现）；卧车( sleeper的名词复数 )；轨枕；睡觉（呈某种状态）的人小耳环； 英英释义： sleepern.a rester who is sleeping同义词：slumberera spy or saboteur or terrorist planted in an enemy country who lives there as a law-abiding citizen until activated by a prearranged signalan unexpec