However, putting high voltage lines below the  ground created a whole new set of challenges.

然而，将高压线置于地下会带来一系列全新的挑战。

This antenna became top heavy and came in contact with high voltage lines in back of us, some twelve thousand five hundred volts.

这个天线变得头重脚轻，与我们后面的高压线接触，大约有12500伏。

Unfortunately, stringing high voltage lines  overhead isn't always feasible or popular with the local residents, especially in dense  urban areas.

不幸的是， 架空高压线路并不总是可行或不受当地居民欢迎，尤其是在人口稠密的城市地区。

So this is where they're taking the power from the high voltage lines and we're switching it down and stepping it down to be able to be consumable energy for the miners themselves.

所以这就是他们从高压线上获取电力的地方，我们正在把它调低，然后再降低，以便能够为矿工们自己消耗能量。