niches造句
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 same ecological
niches in the same areas usually do not cross.
在同一地区占有同样生态生境的两个种通常不杂交.