central pivot

例句：

1. 1. The central pivot of the system is the control panel.
   系统的中心枢轴是控制面板。
2. 2. The central pivot of their strategy was to focus on customer service.
   他们战略的中央枢轴是专注于客户服务。
3. 3. The central pivot of the design is the user interface.
   设计的中央枢轴是用户界面。