吐故纳新的解释 (1) [exhalling the old and inhalling the new;get rid of the stale and take in the fresh]∶废弃旧的,吸收新的 (2) [breathe]∶人体的呼吸过程,谓呼出二氧化碳,吸进新鲜空气。比喻扬弃陈旧的、无用的...