出处:按学科分类—语言、文字 中国对外翻译出版公司《汉英成语词典》第180页(222字)
给人看的是玉,而卖给人的却是石头,意同“挂羊头,卖狗肉”,例这家小店老板,经常做炫玉贾石的勾当,欺骗顾客。
The owner of this small shop often makes dubious deals and sells inferior quality or imitation stuff to its customers.