Many zoologists believe that it was because so many ecological niches were available with virtually nocompetition from existing species.
很多动物学家认为，这是因为，在几乎没有任何现存竞争物种的情况下，有太多的生态小生境可供生存。
2
Schools or teachers who sign up for the National Math Club receive a kit full of activities and resources, but there's no special teacher training and nocompetition attached.
In some cases, industrial giants faced with little or nocompetition seek to avoid the capital loss resulting from obsolescence by deliberately obstructing technological progress.