problems名词problem的复数形式problems environment mode问题情境式Problems have piled up.现在是问题成堆。Problems in rehabilitation康复相关问题Problems comprising system问题蕴含系统problems in campus culture问题Problems with Business Ads对我国企业广告误区的分析Problems began mounting.问题多起来了。problems that defy borders超越国界的问题problems of farmer workers农民工问题Problems of water resource水资源问题