单词	Uncle Sam
释义	Uncle SamUncle Sam /ˌʌŋkəl ˈsæm/ noun Word Origin WORD ORIGINUncle Sam Origin: 1800-1900 Probably based on U.S., short for United States informal the US, or the US government, sometimes represented by the figure of a man with a white beard and tall hat
随便看	upstream upsurge upswing uptake up-tempo uptight uptime up-to-date up-to-the-minute uptown upturn upturned UPVC upward upwardly mobile upward mobility upwards upwind Ur Urals uranium Uranus urban urbane urbanely

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