From the perspective of the client, there is no down time, as the transition is automatic.

从用户角度，感觉不到停机，因为转换是自动完成的。

youdao

From the perspective of the client, there is no down time, as the transition is automatic.

从用户角度，感觉不到停机，因为转换是自动完成的。

youdao