quackery

例句：

1. 1.He was accused of quackery by the authorities.
   他被当局指控为江湖骗子。
2. 2.The quackery has been exposed as a fraud.
   这种伪科学已经被揭露为一场骗局。
3. 3. The quackery has been banned from the market.
   这种伪科学已被禁止在市场上销售。