stretcher straightening

例句：

1. 1.The doctor uses a stretcher to lift the patient off the floor.
   医生使用一张床来把病人从地板上抬起。
2. 2.The nurse stretched out her arms to help him.
   护士伸出她的手臂来帮助他。
3. 3.The policeman used a stretcher to carry the injured person to the hospital.
   警察用一张床来把受伤的人送到医院。