1. 反对者
    An objector is someone who states or shows that they oppose or disapprove of something.

    e.g. The district council agreed with the objectors and turned down the application.
           区政务委员会同意反对者的意见，拒绝了这一申请。

1. a person who dissents from some established policy

    Synonym: dissenterdissidentprotestercontestant