百岁学人缪天瑞
miao tianrui
the Hundredth-Year-Old Scholar
北京大学人民医院
People’s Hospital of Beijing University
北京林业大学人文社会科学学院
School of Humanities and Social Science
beijing forestry university
成人学习不良
adults with learning disabilities
成人学习特性
learning characteristic of adult
初级对外汉语教学人才
junior teaching talents of external Chinese langua