Another concern, the networks powering cryptocurrencies are using energy, a lot of it.

另一个值得关注的是，维持加密货币运转的电脑网络会消耗大量能源。

He had the idea of building a global wireless power network, and he was going to transmit power to go around the world.

他萌生了建设全球无线电力网络的想法，他要将电力传输到世界各地。