2 sentences

1. 监狱的围墙上布满了高压电网。

   jiān​yù de wéi​qiáng shàng bù​mǎn le gāo​yā diàn​wǎng.

   The prison walls are covered with high-voltage electric fencing.

   Source: Dong Chinese Dictionary

2. 为了保证冬季供电，国家电网进行了全面检修。

   wèi​le bǎo​zhèng dōng​jì gōng​diàn, guó​jiā diàn​wǎng jìn​xíng le quán​miàn jiǎn​xiū.

   To ensure the winter power supply, the State Grid underwent a comprehensive maintenance.

   Source: Dong Chinese Dictionary