Across geographic gradients, Levins expects allopatric races or coenospecies exist.穿过地理梯度, 莱文斯预料有分布区不重叠的小种或近群种.You often lose out when you bet on horse races.你在赌马时,常常输掉.The high point of this trip was a day at the races....
Jockeys are forbidden to bet on the outcome of races.职业赛马骑师禁止对赛马结果下注。Barron invited her to accompany him to the races.巴伦邀请她陪他参加比赛。The College welcomes students of all races, faiths, and nationalities.学院欢迎所有的学生，无论其种族、宗教信仰...