由此我们认识到，我们可以通过一系列偶然事故或反复试验摸索建立一个功能完备的生态系统。
What it tells us is that we can build a fully functioning ecosystem through a series of chance accidents or trial and error.
它提供了300多个美国海岸受缺氧影响的水体综合清单。在八个案例研究中，突出介绍了一系列受缺氧影响有代表性的生态系统。
It provides a comprehensive list of the more than 300 U.S. coastal water bodies affected by hypoxia and, in eight case studies, highlights a range of representative ecosystems affected by hypoxia.
他们利用科学杂志网页，一种在线日志归档网页，收集了240篇经过审稿的关于大型陆地和水生生态系统复原率的一系列科学论文。
They used Web of Science, an online journal archive, to gather a set of 240 peer-reviewed scientific papers that measured recovery rates in large terrestrial and aquatic ecosystems.
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