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Local grids can 't handle that much power .

本地电网无法处理这么大的电量。

City authorities will need mass-transit systems , power grids and telecoms equipment .

市政当局将需要公共交通系统、电网和电信设备。

Even on the ground , a large flare can overload power grids .

就是在地面，一次巨大的太阳风暴也能使电网超过载荷。

But this also requires costly power grids to carry the electricity to the distant cities .

但是这同样需要代价高昂的电网把电力输送到远距离的城市中。

Governments suspect each other of mounting cyber espionage and attacks on power grids and other infrastructure .

政府相互怀疑对方对自己的电网和其他基础设施发起网络间谍活动和网络攻击。