释义 n.过伸；伸展过度；腹背训练凳 实用短语hyperextension injuries过伸性损伤hyperextension of fetal headknee hyperextension膝过伸步态hyperextension injury后仰伤害,过伸损伤hyperextension spinal brace过伸性脊柱支架hyperextension of elbow肘后翻hyperextension fracture过度伸展型骨折reduction by hyperextension of spine腰背过伸复位法