comparison ad比较广告,(新旧产品)对比广告comparisonn.比较；比喻comparison and selection model模型比较与选择comparison of three algorithms算法比较Comparison between performance性能比较comparison of higher education比较高等教育comparison of brand management品牌管理比较comparison of the constitution宪法比较comparison and affective image比兴comparison of the same article同文比较comparison-of-pair sorting成对比较分类comparison of industrial basis产业基础比较