Ukraine's national energy agency says that the main network of its central region's power grid has been damaged after intense Russian strikes.

乌克兰国家能源机构称，在俄罗斯发动猛烈袭击后，乌克兰中部地区的主要电网遭到破坏。

And in one case I was very struck by, they trained a system on Othello, the board game, and inserted one of these probe networks into the main network.

在一个案例中，我感到非常震惊，他们在棋盘游戏《黑白棋》上训练了一个系统，并将这些探测网络之一插入到主网络中。