短语词组短语Stretch you back 身印式stretch your back 拉直背部immediate stretch -back rate 即时回缩率Immediate stretch back ratio 即时回缩率stretch back to 起源于back stretch 非终点直道stretch out and draw back 伸出和缩进;伸缩Feet to Back Stretch 伸足背后伸 返回 stretch back