Now, in a grassland of Lake Ecosystem, we'd expect to find fossils from a variety of animals, and numerous fossils have been found at least at these particular sites.

现在，在湖泊生态系统的草原上，我们可以预料能找到各种动物的化石，至少在这些特定地点已经发现了大量的化石。

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Eutrophication is the main factor for the degradation of lake ecosystem.

富营养化是导致湖泊生态系统退化的主要因素。

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It is demonstrated that the recovery of lake ecosystem may greatly improve water quality.

实践证明，湖泊生态系统恢复可以显著改善水质。

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Scientists fear that if they are allowed to travel upstream, they could spawn, multiply and threaten the larger ecosystem of the Lake Michigan.

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The lake's owner, the Nature Conservancy, asks that they not: The ecosystem is home to the endangered 2-inch Borax Lake chub, which exists only here.

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Ikal Angelei, grew up around Lake Turkana, Kenya, home to a thriving ecosystem that supports hundreds of thousands of indigenous farmers, herders, and fishers.

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