card bed

例句：

1. 1. She decided to buya new card bed for her guest room.
   她决定给她的客房买一张新的床垫。
2. 2. The old card bed was worn outand needed to be replaced.
   那张旧床垫已经磨损不堪，需要更换了。
3. 3. Hebought a new card bed for his son's birthday party.
   他为儿子的生日派对买了一张新床垫。