probleme问题problemn.问题；难题；习题adj.成问题的；难对付的problem solving skill问题求解技巧problem of livelihood民生问题problem understanding问题理解problem consciousness问题意识Problem and Actuality解决方案problem of population人口问题Problem and advantage问题与优势problem of investment出资问题Problem Base Learning问题学习problem meta-object问题主体