Coal was produced mostly in six states: Pennsylvania, Ohio, Indiana, Illinois, West Virginia and Colorado. In eighteen forty, the United States had seven thousand coal miners.

美国煤矿主要在六个州：宾夕法尼亚州、俄亥俄州、印第安那州、西维吉尼亚州和科罗拉多州。

youdao

That volume is almost as much as the combined annual flows of the Ohio and Susquehanna Rivers, as measured by the United States Geological Survey.

按美国地质调查局测算，该水量几乎相当于俄亥俄河和萨斯奎哈纳河年度流量的总和。

youdao

As a result, the state is tied with Ohio for having the lowest percent usage of renewable energy sources in the United States, with a mere 0.7%.

结果，该州和俄亥俄州在新能源方面的比例都很低，只有0.7%。

youdao

Glenn became famous. He later was elected to the United States Senate from the state of Ohio.

VOA: special.2009.06.17

He agreed that doing so is the only way to keep Ohio and United States globally competitive in the new energy economy.

FORBES: The Business of Advanced Energy

It was also a forum to have a conversation about what needs to be done to drive the industry forward, both in Ohio and across the United States.

FORBES: The Business of Advanced Energy

Years of service: Keating, a native of Dayton, Ohio, graduated from the United States Naval Academy in 1971.

CNN: Specials