名詞 sleeper:

1. a rester who is sleeping
   同義詞：slumberer
2. a spy or saboteur or terrorist planted in an enemy country who lives there as a law-abiding citizen until activated by a prearranged signal
3. an unexpected achiever of success
4. one of the cross braces that support the rails on a railway track
   同義詞：tie, railroad tie, crosstie
5. a passenger car that has berths for sleeping
   同義詞：sleeping car, wagon-lit
6. pajamas with feet; worn by children
7. a piece of furniture that can be opened up into a bed
8. tropical fish that resembles a goby and rests quietly on the bottom in shallow water
   同義詞：sleeper goby
9. an unexpected hit

1. I never knew such a sound sleeper! Once his head touches the pillow, he just lies there as still as death till he's wakened.
   我從未見到過這樣會睡的人。只要他的腦袋一碰到枕頭，他就會死一樣地躺在那兒，一動不動的，直到一覺睡醒。
2. That movie is the sleeper of the year: suddenly everyone has to see it.
   那部電影爆出冷門，成了今年的最佳影片。突然間，每一個人都不得不一睹為快
3. Many sleepers were fixed on a railway.
   一條鐵路上有許多固定了的枕木。
4. I am a bad sleeper.
   我總睡不好。