Doctors had tried to dissuade patients from smoking. [VERB noun + from]

医生们劝病人不要吸烟。

She steadfastly maintained that her grandsons were innocent, and nothing could dissuade her from that belief. [V n from -ing/n]

她坚持认为她孙子是无辜的，什么都不能改变她这一看法。

He considered emigrating, but his family managed to dissuade him. [VERB noun]

他考虑过移民，但他家人劝阻了他。