这位所谓的医生其实是个骗子，他的治疗方法纯粹是江湖骗术。

The so-called doctor is a fraud, and his treatments are nothing but ___quackery.

这位所谓的‘健康专家’推荐的治疗方法后来被证实是骗人的把戏。

The treatment recommended by this so-called 'health expert' was later proven to be ___quackery.