n.伸展过度，过伸...

hyperextension的音标：hyperextension的英式发音音标为：[ˌhaɪpərɪks'tenʃən]hyperextension的美式发音音标为：[ˌhaɪpərɪks'tenʃən]...

Back hyperextension: Lying on stomach, extend the body, let arms and legs fully stretch out.山羊挺身(上图): 俯卧, 伸展身体, 双腿和双臂向四周充分伸展....