短语词组短语Magic Frailty 诅咒术Fleshly frailty 身体的虚弱frailty detail 切齿工具frailty model 关键词frailty syndrome 脆弱症候群hardness frailty 坚强Frailty models 随机效果模型human frailty 人的脆弱;人性的脆弱 返回 frailty