pivot

在谈判过程中，他成为了双方沟通的关键人物。

During the negotiation, he became the ___pivot between the two parties.

这个旋转门运转良好是因为它的枢轴设计精良。

The revolving door operates smoothly due to its well-designed ___pivot.

这家初创公司从食品配送转向了杂货供应服务，完成了战略转型。

The startup made a ___pivot from food delivery to grocery supply services.