sleeper [ˈsli:pə(r)]

以下由轻松背单词网站提供

n.睡眠者，卧车，卧铺

someone who sleeps in the stated way

I usually go up to London on the sleeper. 我一般都乘卧车去伦敦。
But first he explained that he was a very heavy sleeper. 但首先他解释说自己睡觉很沉。