In social politics, too, the city's contribution to 20th century thought and culture was no less portentous...同样从社会政治学上看，城市对20世纪思想、文化的贡献也意义重大。This is Chekhov's contribution to Russian literature.这是契诃夫对俄罗斯文学的贡献。...
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...