The bright plumage of many male birds has evolved to attract females.很多雄鸟进化出鲜艳的羽毛是为了吸引雌鸟。This is the only species of flamingo in the region, easily recognized by its pink plumage.这是那个地区唯一一种火烈鸟, 很容易凭粉红色的羽毛辨认出来....the vivi...
In the periphery of the retina, ganglion cells are relatively few in number.在视网膜的边缘区节细胞相当少.Clusters of ganglion cells were scattered throughout the tumor.神经节细胞束被肿瘤彻底的分散.AQP 2 located in stria vascularis , Corti's or...
While so preoccupied, he forgot his usual cautiousness.在这么乱想的时候, 他忘了素日的谨慎.He was too preoccupied with his own thoughts to notice anything wrong.他只顾想着心事，没注意到有什么不对。At nightfall, he returned to the rickshaw yard dead - beat...