Another confounding factor revolves around budget.

另一个因素干扰是预算。

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One confounding factor is that the late Cretaceous was also a period of great volcanic activity.

但后白垩纪火山运动频繁，这一点很容易混淆视听。

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One possible confounding factor, however, is that the children were not tested for lead exposure when they were toddlers.

然而一个可能的混淆的因素是孩子没有被测试是否在刚学走路时就处在污染环境中。

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One confounding factor is that the late Cretaceous was also a period of great volcanic activity.

ECONOMIST: Mass extinctions

In other industries, though, recession should be viewed more as a confounding factor that magnifies existing business risk.

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The confounding factor is when contestants are forced to sing songs out of their comfort zone, something we have yet to see this year.

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