translation.en: It's about 50 feet wide and recedes about half a mile -- row after row of cells that, inside, resemble Volta's battery, with three important differences.
translation.zh: 宽约 50 英尺 长约半英里 — — 那里面有一排一排的单元组， 这类似于伏特电池。 但是他们有三个重要的区别：