Some Internet Voice services don't work during power outages and the service provider may not offer backup power;

o r一些互联网话音服务不工作期间停电及服务提供者不得提供后备力量；

youdao

Some Internet Voice services don't work during power outages and the service provider may not offer backup power;

o r一些互联网话音服务不工作期间停电及服务提供者不得提供后备力量；

youdao