As Gregory points out, the files that document what happened between 1925 and 1936 make clear that this conclusion had been reached before any studies began.

正如格里高利所言，1925至1936年间的档案清楚地显示，研究开始之前结论就已经定了。

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The study did not follow the subjects long enough to document what effect the genetic changes may actually have on the lung tissue, but Crystal says those studies are forthcoming.

这项研究还不能确定基因变化会对肺组织产生什么样的具体影响，但是克里斯多博士说关于此的研究会继续的。

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These studies document that the rates at which young men, and especially young women, have been graduating from universities have accelerated in almost every country during the past 30 years.

这些研究证明，在过去30年里，几乎每个国家的青年，特别是青年女性的大学毕业率都在增长。

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What about the studies that document the fact that working women who enjoy their careers and are happy about working promote stable marriage and provide wonderful role models for their children?

FORBES: Readers Say

The same studies that document the power of the social network have also shown that, when people are cut off from the network, they lead much shorter lives.

WSJ: Our Social Networks, Ourselves

Her awareness of the political, health, socioeconomic and environmental conditions stems from her membership, since 1996, of the Development Studies Center which is responsible for publishing the yearly national document of relevance.

UNESCO: THEMES