常見例句Dunne knew this because as a jeweller he often bought old gold and melted it down.鄧恩知道斯特朗有些值錢的舊金器，因爲(wèi)他是一個(gè)珠寶商，經(jīng)常收購(gòu)這些東西，然後把它們重新廻爐。 返回 gold plate