This experiment certainly does not definitely prove that girls start to reason before boys, but it provides a clue that scientists would like to study more carefully.

这个实验当然不能肯定地证明女孩比男孩更早开始懂道理，但它提供了一条让科学家们想要更仔细研究的线索。

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The first defense against risk is to choose safe genes well and carefully and prove their suitability.

抵抗风险的第一道防线是精心选择一种安全基因，并证明其适用性。

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Even carefully constructed observational studies that correct for such variables can only find correlations, not prove a cause-and-effect relationship.

即便是那些精心设计、对这些变量已作调整的观察性研究也只能发现其中的相关性，而无法证实一种因果关系。

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On Monday, Tim Anderson, a sell-side analyst at Prudential Equities, wrote in a research note that he and his team believe that Bristol carefully designed Prove-It to show the drugs are the same, perhaps by making the study too small or too short.

FORBES: Bristol Prepares Shot In Statin War

He thinks the device could even prove handy in some carefully chosen biomedical applications, especially in the developing world where inexpensive solutions are in demand.

ECONOMIST: Monitor

The computer search was a key piece of evidence in the murder trial as the prosecution sought to prove that Anthony had carefully studied the use of chloroform to render her daughter unconscious as part of a plan to murder 2 year old Caylee Anthony.

FORBES: Prosecutor Misconduct In Casey Anthony Case Alleged