像其他局外人一样，他们对我们共有的生态环境的卓越理解不断给我留下深刻印象。
Like other outsiders, I was continually impressed by their superior understanding of the ecology we shared.
环境因素的影响以及在元社区水平上研究群落系统发育有助于理解区域生态进程。
The influence of environmental factors and studying community phylogeny at the metacommunity level helps to understand regional ecological processes.
一个教训是，鱼种不能捕捞到使生态系统失衡的程度，这个结论不需要吃鱼的杰夫斯（万能管家）的大脑才能理解。
One lesson here is that no species should be fished to the point where the ecosystem is unbalanced. That conclusion hardly requires the fish-fed brain of Jeeves.
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