pivot on
phrasal verbpivot around/on something
(of an argument, a theory, etc. 论点、理论等 to depend completely on something 围绕（主旨）；以…为核心 The entire plot pivots around this meeting. 整个情节围绕着这次会议展开。
pivot on/around something
(of an argument, a theory, etc. 论点、理论等 to depend completely on something 围绕（主旨）；以…为核心 The most scandalous news stories pivot on money, not sex. 最令人愤慨的新闻故事都围绕着金钱，而不是性。