Only a few places do, Washington DC, and Santa Cruz and San Francisco in California.

只有少数地方政府有，如华盛顿特区、加州的旧金山和圣克鲁兹等。

That's where you'll find the inverter, which is what converts that DC into AC and gives power to the engine.

有逆变器，它将直流电转换成交流电，给引擎提供动力。

But no agreement was announced Thursday as lawmakers began to leave Washington DC ahead of the country's annual Memorial Day weekend.

但在美国一年一度的阵亡将士纪念日周末之前，随着国会议员逐一离开华盛顿特区，双方没有在周四宣布达成协议。

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。

Lauren Aitken started Conversational DC last year.

劳伦·艾特肯 (Lauren Aitken) 去年创办了 Conversational DC。

Next, the modelers populate their virtual DC with millions of digital people, known as 'agents'.

接下来，建模人员用数百万数字人（称为“代理人”）填充他们的虚拟 DC。

This invention led to Tesla winning the war on currents against Thomas Edison's DC and electrifying the world.

这项发明使特斯拉赢得了与托马斯·爱迪生的直流电的电流战争，并使世界电气化。

A public policy poll conducted back in 2016 found that only 28% of Marylanders favored annexing DC and a later 2019 Washington Post poll found that 57% of Marylanders opposed annexing DC full stop.

早在 2016 年进行的一项公共政策民意调查发现，只有 28% 的马里兰人赞成吞并华盛顿特区，后来的 2019 年《华盛顿邮报》民意调查发现，57% 的马里兰人反对吞并华盛顿特区。

So, to help them figure out what to expect in such a catastrophe, researchers from Virginia Tech university have built an entire digital DC inside a computer — and have blown it up over and over and over.

因此，为了帮助他们弄清楚在这样的灾难中会发生什么，弗吉尼亚理工大学的研究人员在计算机中构建了一个完整的数字 DC，并一遍又一遍地炸毁它。