fixed water bed

例句：

1. 1.This fixed water bed is very comfortable for sleeping.
   这个固定式水床非常适合睡觉。
2. 2. The patient was given a fixed water bed to help him recover.
   病人被给予了一个固定式水床来帮助他康复。
3. 3. The nurse adjusted the patient's fixed water bed to ensure proper sleep position.
   护士调整了病人的固定式水床，以确保正确的睡眠姿势。