Some larvae extend the galleries to form niches.许多幼虫将坑道延伸扩大成壁龛.In his view differences in adaptation are insufficient to create niches commensurate in number and kind.按照他的观点,适应的差异不足以在数量上和种类上形成同量的小生境.Species occupying the...
火流星出现时,你会正好在记录一颗+5等的流星.When a fireball appears you will invariably be recording a + 5 m meteor.火流星永远会出现在你相机的视场中,只不过总是在曝光间隔出现.A fireball will invariably appear in your camera's field of view in between exposures.火流星会...