◎ sleeper是什么意思 n. 睡眠者, 枕木, 卧铺[法] 睡眠者, 懒人, 死人 n. a rester who is sleepingn. a spy or saboteur or terrorist planted in an enemy country who lives there as a law-abiding citizen until activated by a prearranged signaln. an unexpected ach...