There have been no studies of the effects of a low carbohydrate diet on pregnancy, so its effect on the fetus, if any, is unknown.
目前还没有关于怀孕时低碳水化合物饮食影响的研究，因此如果它对胎儿有什么影响也是不知道的。
There's also been a great increase in the number of networking sites devoted to sharing advice on health issues but there are as yet no studies to prove the reliability of that advice.
致力于分享健康问题建议的社交网站的数量也在大幅增加，但目前还没有研究证实这些建议的可靠性。
There are no studies that address physiological changes when someone drinks an alcoholic energy drink.
没有涉及饮用酒精性功能饮料的人体生理性变化的研究。
"There have been no studies approved because of the lack of safety," said Goldberger at the University of Florida.
“因为缺乏安全性，还没有研究获得批准，”Goldberger在佛罗里达大学说。
There are no studies to show that the hormones in the pill would seriously harm the baby.
但无研究表明激素会严重损害胎儿。
As there were no studies that met the inclusion criteria no data collection or analysis was conducted.
由于没有符合纳入条件的研究，无法进行相关资料的收集或分析。
In studies with age criteria, no studies enrolled patients under the age of 18 years or not of skeletal maturity.
年龄方面的标准，没有研究入选了小于18岁或骨骼未成熟的患者。
There have been no studies of the effects of a low carbohydrate diet on pregnancy, so its effect on the fetus, if any, are unknown.
目前为止还没有关于怀孕时低碳水化合物饮食影响的研究，因此如果对胎儿有什么影响也是不知道的。
So far, no studies have proven beyond question that the radio signals from cell phones cause brain cancer or other health problems.
到目前为止，还没有研究证明，手机的无线电信号毫无疑问会引起脑部癌症或其他健康问题。
So far, no studies have proven beyond question that the radio signals from cell phones cause brain cancer or other health problems.
截至目前为止，尚未有研究可以确切证明，手机信号会引发脑癌和其他健康问题。
The timing and type of coronary revascularization may play a role in the stroke risk, but until now no studies have looked at this.
心肌梗死以后血管再通的时间和方式对脑中风的危险性具有一定影响。直到最近还没有研究关注这一方面。
To date, no studies have been conducted on plastic decomposition at low temperature in the environment owing to the mistaken conception that plastic does not decompose.
他说，“到目前为止，由于错误地认为塑料不会降解，所以人们尚未开展有关塑料在低温环境降解的研究。
No studies found that eating breakfast was bad for concentration.
没有研究发现吃早餐不利于注意力的集中。
No studies were found which were eligible for inclusion in this review.
本篇评论文章未发现并纳入合适的研究。
No studies were found meeting the criteria for inclusion in this review.
未发现符合本评价纳入标准的研究。
No studies have determined mechanisms for what we have seen, or other effects such as increased blood flow in the brain,” Volkow said.
没有研究确定了我们所看到现象的原理，或者说其他的一些影响例如增加脑部的血流量。
"No studies I'm aware of have ever taken IQ into account or looked at how people with different cognitive abilities might respond [to treatment]," she says.
我知道还没有研究把智商考虑进去或观察不同认知能力的人们对治疗的反应。
No studies differentiated results by socioeconomic status, although one study did compare findings by gender but found no differential effect on self-reported health outcomes.
并无研究依据社会经济状态区分结果，但有一项研究则确有依据性别比较研究的发现，但未发现性别对自我报告之健康评估指标的影响有所差异。
No studies differentiated results by socioeconomic status, although one study did compare findings by gender but found no differential effect on self-reported health outcomes.
并无研究依据社会经济状态区分结果，但有一项研究则确有依据性别比较研究的发现，但未发现性别对自我报告之健康评估指标的影响有所差异。
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