Their decision to abandon the trip was made because of financial constraints.他们决定放弃这次出游是因为财力有限。He is wanting in moral constraints.他缺少道德约束。Data and constraints can easily be changed to test theories.信息库中的数据和限制条件可以轻易地改变以检验...
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....