The trouble with all these studies is that they draw firm conclusions from sparse data.
所有这些研究的问题在于，他们确定的结论来自于寥寥无几的数据。
Neither of these ideas has been supported by evidence from large studies.
不过，这些都没有得到大量的研究的证明。
In the new analysis, all of the data from these previous studies were pooled together.
在把以前所有的数据整合后，研究者们对数据进行了新的分析。
So what makes studies like these different from ordinary research?
那么这样的研究和寻常研究有什么不同呢？
So what makes studies like these different from ordinary research?
那么这样的研究和寻常研究有什么不同呢？
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