绷床

例句：

1. 1. He had to sleep on a rickety old bed, which was uncomfortable for him.
   他不得不睡在一个摇摇晃晃的旧床上，这对他来说很不舒服。
2. 2. The patient was lying on the bed with his eyes closed, feeling relaxed.
   病人躺在床上，眼睛紧闭，感觉放松。
3. 3. She sat on the edge of the bed, looking down at her hands.
   她坐在床边，低头看着自己的手。