ㄖㄨˊㄕㄨˇshǔㄐㄧㄚjiāㄓㄣzhēn

  1. 好像自家珍藏珠寶一樣比喻敘述事物明晰熟練·歸田··》:本朝叔子著作貫串如數家珍。」·雜著··律詩》:放翁香山取材作態歷歷落落如數家珍。」若數家珍」。不知凡幾

lit. as if enumerating one's family valuables (idiom)​, fig. to be very familiar with a matter
sachkundig (Adj)​