[liú máng]
（為非作歹的人） rogue; hoodlum; hooligan; ruffian; tramp; vagabond; riff-raff; loafer; gangster; rascal; blighter; bad lot; bad egg （通常指男人）
gang of hooligans; criminal gang
流氓集團
（施展下流手段等惡劣行為） immoral behaviour; hooliganism; indecency; indecent assault
behave like a hoodlum; take liberties with women; act indecently
耍流氓