elderlyadj.年老的；年长的elderly primigravida高年初孕妇Elderly osteoporosis老年骨质疏松elderly-care model养老方式Elderly brain disease老年脑疾病Elderly schizophrenia老年精神分裂症Elderly outdoor space老年户外空间elderly heart failure老年心力衰竭Elderly in-patients老年住院患者Elderly periodontitis老年牙周炎Elderly hypothyroidism老年性甲状腺功能减退症