coth

例句：

1. 1. She fell asleep on the couch last night.
   她昨晚在沙发上睡着了。
2. 2. The old man needs a new mattress to sleep better.
   老人需要一张新床垫才能睡得更好。
3. 3. I'm going to buy a new pillow for my bed.
   我打算给我的床买一个新的枕头。