detractor [dɪˈtræktər]

例句:

• A certain partner, competitor, or detractor is due to be unpredictable and challenging.
  一个合作伙伴 、 竞争对手或者小人会在当天不可预料地给你带来麻烦.
  
• For every detractor, there was a defender.
  来自THETIMES
• Their actions determine whether a customer becomes a brand evangelist or detractor.
  来自WSJ
• The most obvious detractor to this study is the fact that an individual's physical appearance varies depending upon many factors.
  来自SA