短语词组短语waist backache 腰背痛persistent backache 持续性背痛a backache 背痛;背疼backache syndrome 背痛综合征Thoracic backache 胸背痛backache n 背痛lower backache 下背痛low backache 腰痛backache e 背痛;背痛腰痛 返回 backache