那个自称能预测未来的江湖骗子其实只是个靠花言巧语骗钱的冒牌货。

The so-called fortune-teller was just a ___mountebank scamming people with smooth talk.

那个江湖郎中在集市上兜售他的所谓'包治百病'的药粉。

The ___mountebank was selling his so-called 'cure-all' powder at the market.