demarcation dispute
noun [ C ] UK uk/diː.mɑːˈkeɪ.ʃən dɪˌspjuːt/ us/diː.mɑːrˈkeɪ.ʃən dɪˌspjuːt/
（不同工会间的）分工纠纷，分工争议
a disagreement between trade unions (= organizations of workers) about what types of work should be done by the members of each of them