You can choose any track in the Single Race mode.

您可以选择任何轨道，在单一的比赛模式。

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Media in the 20th century was run as a single race — consumption.

媒体在20世纪的运作方式是单一的—仅仅是观看。

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The game also features, single race, time trial, championship and reverse track modes.

游戏还采用单赛，计时赛，冠军和反向追踪模式。

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Only the past two censuses have allowed citizens to identify with more than a single race.

WSJ: Population Leaves Heartland Behind

Of single race non-Hispanic whites, California had the largest population at 15 million.

CNN: Most U.S. children under 1 are minorities, Census says

And then that also - that conclusion led some people to think that perhaps the African-American community is now so diverse that perhaps it shouldn't even be considered a single race anymore.

NPR: Roundtable: College Students Debate Pew Poll on Race