lead counterfeit of a silver spearhead;a good-for-nothing with an impressive appearance;fine feathers but no fine birds
銀樣镴槍頭镴（蠟）yín yànɡ là qiānɡ tóu
镴（蠟）:焊錫。表面上像銀制的，但實(shí)際上是焊錫做的槍頭。比喻表面上好看，但實(shí)際上不中用。an impressive-looking but useless, a pewter spearhead that looks like silver