The courses are long and punishing, with steep gradients.这些赛道既长又有陡坡，极具挑战性。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.And the evidence is that the differ...
In the present study, gradients of gentamicin along the cochlea were measured.在目前的研究之中, 可以测量庆大霉素沿着耳蜗的浓度梯度分布.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.T...