1. The tight race is almost a duplicate of the elections in Georgia and South Dakota last month that pitted a Republican challenger against a Democratic incumbent.
2. A black-tailed prairie dog perks up outside his burrow in South Dakota.
在南达科他州，一只黑尾巴的草原土拨鼠昂首站在他的洞穴外面。
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3. Dakota Gasification of North Dakota captures CO2 at a plant that converts coal into synthetic natural gas.
北达科他州的达科他气化在一个将煤转化为合成天然气的工厂捕捉二氧化碳。
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4. The Ogallala aquifer is a sandstone formation that underlies some 583,000 square kilometers of land extending from northwestern Texas to southern South Dakota.
5. In principle, all the power needs of the United States could be provided by exploiting the wind potential of just three states—North Dakota, South Dakota, and Texas.
