quacker

例句：

1. 1. The quacker's machine is supposed to help people who can't stop their giggles.
   这个打嗝机的设备据说可以帮助那些无法停止笑的人。
2. 2. He was a famous quack, known for his cures and potions.
   他是一位著名的江湖郎中，以他的疗法和药水而闻名。
3. 3. The doctor told her she had a bad case of the hiccups, but she didn't believehim until she saw the quacker's machine in action.
   医生告诉她她得了严重的打嗝症，但她直到看到那个江湖郎中的机器才相信。