不管怎样，仍然有一种基本的观点认为，我们不能在不关心我们所生活的生态系统的情况下拥有自己的生命，不管它是否庄严。
No matter, there is still the underlying idea that we cannot have a life of our own without concern for the ecosystem in which we live, whether in majesty or not.
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。
Many zoologists believe that it was because so many ecological niches were available with virtually no competition from existing species.
然而，在不对全世界的自然生态系统的剩余区域产生不利影响的情况下，进一步增加农业面积似乎是不可能的。
However, a further increase in farming area without impacting unfavourably on what remains of the world's natural ecosystems appears unlikely.
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