troublemaker
noun [ C ] uk/ˈtrʌb.əlˌmeɪ.kər/ us/ˈtrʌb.əlˌmeɪ.kɚ/
惹是生非者，捣乱者，闹事者
someone who intentionally causes problems for other people, especially people who are in a position of power or authority
I was worried that I would be regarded as a troublemaker if I complained about the safety standards. 我担心如果我对安全规范提意见的话，会被看作是个惹是生非的人。