| 单词 | roosevelt, nicholas |
| 释义 | Roosevelt, NicholasRoosevelt, Nicholas(1767–1854) engineer; born in New York. He was a pioneer in steam navigation, first building a model boat in 1782 propelled by side-paddle wheels turned by springs. He later established a foundry and in 1798 built a steamboat there. In 1811 he and Robert Fulton built the New Orleans, the first steamboat on the Ohio and Mississippi Rivers. |
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