With smart grids, there should be no need to send out lorries and ring doorbells when the power fails.

有了智能电网，停电事故发生时，就没有必要派出维修车辆，敲别人门铃。

youdao

With smart grids, there should be no need to send out lorries and ring doorbells when the power fails.

有了智能电网，停电事故发生时，就没有必要派出维修车辆，敲别人门铃。

youdao