I do not remember a single race in the team history that we got three cars out of the race so early but that is motor racing.

如果我没有记错的话，这应该是车队有史以来第一次有三辆车这么早的退出比赛，不过赛车运动就是这样。

youdao

The RAPD profiles of different single-spore isolations in each race were identical, so the inheritance background of single race was coherent.

而生理小种内不同单孢分离系间没有RAPD谱型的差异，生理小种内的遗传基础相对一致。

youdao

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