party line
noun [ C ] uk/ˌpɑː.ti ˈlaɪn/ us/ˌpɑːr.t̬i ˈlaɪn/
(POLITICS)
the party line 政党的路线，政党的政策
the official ideas and goals of a political party
Her speech deviated little from the official party line. 她的演讲基本上贯彻了政党的官方路线。
(PHONE)
电话合用线
a phone connection that is shared by two or more customers with separate phones