从受损区到更原始流区的基因流的数量急剧增加，导致了大量的基因流动，进而降低了后代的总体适应性。
Such a dramatic increase in straying from damaged areas to more pristine streams results in substantial gene flow, which can in turn lower the overall fitness of subsequent generations.
但却不会有更多的实际意义，因为这种生命甚至会比细菌更原始。
But it would be of less practical importance, since that something would be very primitive compared even with a bacterium.
他们的行走风格比我们的更原始，但它为我们了解祖先如何学会走路提供了线索。
Their walking style is a lot more primitive than ours, but it could hold clues to how our own ancestors learned to walk.
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