钻故纸堆 zuāngùzhǐduī pore over Definitions Defs Origin Strokes Stroke Words Sentences Sents 钻故纸堆 (鑽故紙堆) zuāngùzhǐduī pore over to study old books and papers; to dig into piles of outdated writings Sources Definitions CC-CEDICT
钻故纸堆 (鑽故紙堆) zuāngùzhǐduī pore over to study old books and papers; to dig into piles of outdated writings Sources Definitions CC-CEDICT
