我们需要同步所有设备的时钟以确保数据一致。

We need to ___sync all devices' clocks to ensure data consistency.

记得在会议前将手机与电脑同步。

Remember to ___sync your phone with your computer before the meeting.

视频和音频需要调整同步，否则会不同步。

The video and audio need to be in ___sync, otherwise they'll be out of sync.