sync select switch

例句：

1. 1. The two programs need to sync their data for accurate calculations.
   这两个程序需要同步数据以进行准确的计算。
2. 2. The clocks must sync at the same time to avoid confusion.
   时钟必须同步，以避免混淆。
3. 3. The team members need to sync their progress to ensure a smooth workflow.
   团队成员需要同步他们的进度，以确保工作流程顺畅。