By studying bacteria that flourish in the oxygen-free water, scientists hope, among other things, to learn how simple life-forms can lead to more complex ones.
通过研究这些生活在无氧环境下细菌，科研人员希望了解这些简单的生物是如何进化成更为复杂的生物的。
By studying the DNA of the samples they were able to determine which bacteria were present.
通过样品dna研究，他们能测定出有细菌存在。
More progress has been obtained in human proteome by studying model biology such as bacteria and yeast.
通过对细菌、酵母等模式生物蛋白质组研究，人类蛋白质组研究取得了一定进展。
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