这两个时钟是同步的。

The two clocks are synchronous with each other.

舞者的动作是完美同步的。

The dancers' movements were perfectly synchronous.

软件更新在所有设备上是同步的。

The software update is synchronous across all devices.

所有的灯同步地闪烁。

All the lights blink synchronously.

他们同步地开始了演奏。

They started playing synchronously.