I'm not talking rock music here, I'm talking electrical currents-alternating current-AC, and direct current-DC, the two ways in which electricity flows.

我不是在说摇滚音乐，我说的是电流——交流电——AC，还有直流电——DC，电流动的两种方式。

We reasoned that the older the local interviewee, the closer we would be to these talking rocks of these stories.

RI：我们认为当地受访者年龄越大，我们就越接近这些故事中的会说话的人。

I'm not talking rock music here, I'm talking electrical currents – alternating current - AC, and direct current - DC, the two ways in which electricity flows.

我在这里说的不是摇滚音乐，我说的是电流——交流电AC和直流电DC，它们是电流流动的两种方式。