Rawlins stresses that it is impossible to prove a causal link between the drug and the deaths.
罗林斯强调说证实毒品与死亡之间的因果关系是不可能的。
At best there is a weak statistical association and not a causal link between DNA and intelligence.
DNA和智力之间最多只存在着微弱的统计关联，而不是因果关系。
Glass cautions that most studies don't necessarily prove a causal link between greenness and health, but they're nonetheless helping spur action.
格拉斯提醒说，大多数研究并不一定能证明绿色与健康之间的因果关系，但它们仍然有助于激励人们采取行动。
However, they stressed that they could not find a causal link.
但他们无法找出具体的联系。
However, they are consistent with other evidence to suggest a possible causal link.
不过，研究结果与其他能证明这种因果关系可能存在的证据具有一致性。
One of the key advances in recent years has been the demonstration of precisely this causal link.
近年来一项关键的进步恰恰在于示范这种因果关系。
The other important detail that needs to be said is that the researchers are not positing a causal link.
另外一个值得一提的细节是，研究都们并没有把两者归结为因果关系。
Previous researchers have struggled to establish a causal link between exam results and time spent studying.
以前的研究人员难以在考试成绩和学习时间之间建立一种因果关系。
The researchers add there is no evidence of a causal link between sleep disruption and any of these conditions.
不过研究人员称还没有证据能够证明睡眠扰乱和这些病理情况之间存在因果联系。
More robust evidence is needed to demonstrate a causal link between aid operations and country level economic performance.
需要更多有力的证据来表明援助活动和国家层面的经济表现之间的因果联系。
But he conceded that the research does not establish a causal link and that the study did not control for many possible variables.
但是他也承认这项研究并未建立一个因果关系的关联，而且该研究没有控制许多可能的变量。
But it seems to me that there are too many outside factors that aren't being accounted for to make a causal link with Facebook in this case.
但是这个事件中存在太多的外部因素无法说明Facebook与此有直接的因果联系。
"If there is a causal link between omega-3, serotonin transporter genotype and depression, we can develop better strategies to deal with it," she said.
“如果在omega - 3，转胺基因型和抑郁之间有逻辑关系，我们便可以研究出更好的策略来对付抑郁症。”她说。
Then again, with valid questionnaires this paper makes use of linear Structural Equation Modeling fitting analysis and causal link between the path analysis.
再然后，结合得到的有效问卷数据，利用线性结构方程进行模型的拟合度分析和因果关系路径分析。
In this study, the basic theory of constructivism as a basis for mining causal link geographically broad things, build the operating system of geographical practice.
本研究以建构主义作为基本的理论基础，挖掘地理事物广泛的因果联系，构建地理实践的操作系统。
No surprise, then, that neither USDA nor the Institute of Medicine of the National Academies has been able to establish a causal link between food deserts and dietary health.
那么意料之中的是，无论是美国农业部还是国家科学院医学研究所都不能将食品沙漠和饮食健康有效连接起来。
We also know that a widely used drug that treats acne, Accutane (isotretinoin), has been associated with an increase in depression, although no causal link has been established.
我们也知道，一种广泛使用的治疗青春痘的药物阿克唐丸(异维甲酸)一直与抑郁加重有关，虽然相关原因还未确定。
Although we have not yet reached that eureka moment where a direct causal link between learning languages and specific cognitive advantages can be proven, the -evidence is building up fast.
尽管我们尚未获得令人惊叹的在学习语言和特定认知优势被正式的直接因果联系，但是，证据的积累在加快。
The crime of dereliction of duty on the causal relationship between the negligence of dereliction of duty and abuse of the causal link between the judicial cognizance of the actual conduct.
关于渎职罪因果关系，对玩忽职守型和滥用职权型渎职犯罪的因果关系的司法认定进行探讨。
In the social scientific point of view, causal relationship is fundamental and basic link among common phenomenon of objective things.
从社会科学的角度上看，因果联系是现实社会之中最根本、最基础的普遍存在的客观事物现象。
In the social scientific point of view, causal relationship is fundamental and basic link among common phenomenon of objective things.
从社会科学的角度上看，因果联系是现实社会之中最根本、最基础的普遍存在的客观事物现象。
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