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....
The couple had helped in the hunt for the toddlers.这对夫妇曾帮着搜寻那些幼童。Toddlers are notoriously antisocial when it comes to sharing toys.众所周知，刚学会走路的孩子不愿和别人分享玩具。Keep a watchful eye on babies and toddlers.要看好婴儿和刚会走路的孩子。...