汗ㄏㄢˋhàn牛ㄋㄧㄡˊniú充ㄔㄨㄥchōng棟ㄉㄨㄥˋdòng

  1. 形容書籍極多。參見「充棟汗牛」條。《聊齋志異·卷五·封三娘》：「世傳養生術，汗牛充棟，行而效者誰也？」反鳳毛麟角

英lit. enough books to make a pack-ox sweat or to fill a house to the rafters (idiom)​; fig. many books