3 sentences

1. 高压电线附近严禁放风筝。

   gāo​yā diàn​xiàn fù​jìn yán​jìn fàng fēng​zheng.

   Flying kites near high-voltage power lines is strictly prohibited.

   Source: Dong Chinese Dictionary

2. 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

3. 变压器负责将高压电降压为民用电压。

   biàn​yā​qì fù​zé jiāng gāo​yā​diàn jiàng​yā wéi mín​yòng diàn​yā.

   Transformers are responsible for stepping down high-voltage electricity to residential voltage.

   Source: Dong Chinese Dictionary