to (cause to) happen at the same time

The show was designed so that the lights synchronized with the music. 根据设计，演出的灯光和音乐是同步的。

When people synchronize their watches, they make sure that all their watches show the same time.

We'd better synchronize our watches if we all want to be there at the same time. 如果我们大家想在同一时间到达那里，最好把表对一下。