A nexus is a connection or series of connections within a particular situation or system.
例句
The Prayer Book has provided a flexible enough nexus of beliefs to hold together the different church parties.祈禱書為各信仰之間建起了足夠靈活的聯系紐帶，以期將各個不同教派凝聚在一起。...the nexus between the dominant class and the State.主導階層和國家之間的關系
英漢詞典釋義
n.
(事物、思想等之間的)聯結,聯系,關系，樞紐，紐帶
the causal nexus因果關系this nexus between New York’s real-estate investors and its politicians紐約不動產投資商和政治家之間的紐帶
英英詞典釋義
Noun
1. the means of connection between things linked in series