There was no positive evidence that any birth defects had arisen as a result of Vitamin A intake.
没有确凿证据表明摄入维生素A会导致先天缺陷。
But without positive evidence, people suspected and rejected his view, saying the theory he put forward made no sense.
但是没有确实的证据，人们很怀疑并拒绝他的观点，大家都说他提出的理论毫无道理。
But until now, the human goodness by nature has not yet been identified by positive evidence in physiology, genetics and psychology.
然而，“人性本善”至今并无生理学、遗传学、心理学上的科学实证的根据。
From the point of analyzing positive evidence, the evidence practice of such cases should be analyzed to provide guidance to judicial practice.
从实证分析的角度，对该类案件的证据实务进行剖析，将为司法实务提供指导。
Exercise, diet, cognitive stimulation showed some positive effects, although the evidence was not so strong that we could actually consider these firmly established.
锻炼、饮食、认知刺激显现出了一些积极效果，尽管证据还没有足够充分到我们实际上可以确定的地步。
Although this is intriguing evidence, no one's actually observed a Venus volcano erupting yet, so we can't be positive.
尽管这是一个有趣的证据，但是还没有人观察到金星的火山喷发，所以我们不能肯定。
"Once you show the positive activation and impairment when the brain region is damaged you have good evidence that you have at least part of the circuit," he says.
“一旦你表明阳性的激活，而当脑区损伤则受到到破坏，你就有很好的证据说你找到了至少一部分的回路，”他说。
Still, this result remains something of a puzzle, given all the other evidence on the positive relation between reported happiness and income.
即使考虑到所有其它证据证明幸福和收入之间有绝对的关系，这个问题仍旧让人困惑。
Evidence on technology spillovers is more limited, but industries with higher FDI seem to have higher productivity increases than other industries, suggesting a positive effect.
关于技术溢出效应的证据比较有限，但外资比重大的产业生产率提高的幅度似乎也高于其他产业，从而显示出正效应。
The best evidence for that view would be minor key songs that are stubbornly, ineffably sad despite other song elements-lyrics, arrangements, tempo, etc.-that are emotionally neutral or positive.
撇开那些情绪上中性或是积极的音乐元素，像歌词、要素组合、节拍等，证明小调固含悲情元素的最好证明是小调音乐，因为他们本身就很悲情。
There is also, says Watterson, evidence of a link between shift work and non-Hodgkins lymphoma, possibly because the body's immune system lacks the positive effects of melatonin.
沃特森说还有一些证据表明夜班与非霍其金淋巴瘤有关系，这个可能是因为身体的免疫系统缺少抗黑变激素的刺激造成的。
"I am aware of no scientific evidence that has established that traditional Chinese medicine modalities have any positive effect on stress fractures," Neviaser says.
我很清楚没有任何已知的科学证据表明，某种中药能对应力性骨折起到任何益处。
This is convincing evidence of the fully open internet in China. We encourage positive use of internet, and meanwhile manage the internet in accordance with law.
我们鼓励积极地使用互联网，但同时也对互联网依法进行管理。
the letter from Disney does not set out any evidence of the positive effects of these DVDs.
迪士尼在信中也没有提供任何证据，证明这些DVD有积极效果。
They had the evidence before their eyes for these new particles with positive charge and the same mass as the electrons, but they were just unable to appreciate what they saw.
那些带有正电荷且质量与电子相等的粒子存在的证据就在他们眼前，但他们却没能对他们所见到的东西有所鉴别。
Researchers say there is compelling evidence that he was ‘Kell positive’, a rare blood type which can cause serious health and fertility problems.
研究人员称具有强有力的语气证明他是“凯尔阳性”，这是一种罕见的血型，会导致严重的健康问题和生殖障碍。
And a 2009 study by the Hazelden addiction treatment center in Minnesota found evidence that many teenagers believed that parental honesty about alcohol use was a positive influence.
2009年，一项由明尼苏达州黑泽尔·尔登戒毒中心主持的研究表明许多青少年认为父母对于酒精的诚实态度会对他们产生积极影响。
On the positive side, however, much has happened to support my claim that I am an evidence-based optimist.
但从积极的一面看，发生的许多事情对我的说法带来了支持，就是我是一个以证据为基础的乐观主义者。
Most supported employment programs are founded on evidence-based practices that have displayed positive results.
大部分就业援助项目都建立在实践验证的基础上，已经显示出积极的效果。
Positive % thinking leads to positive action-and reaction. What you expect from the world, the evidence suggests, is what you're likely to get.
积极的思想导致积极的行动和反应。证据表明，你对外界期望些什么，你就很可能得到什么。 。
This association (which need not be invariable) casts doubt on the optimistic assumption that the positive growth rate of a population is evidence that it has yet to reach its optimum.
这种连系（无须是一成不变的）令人对所谓正数增长率表示人口还没有达致最佳点的乐观假定感到怀疑。
Of course, a positive growth rate might be taken as evidence that a population is below its optimum.
当然，增长率为正数，可以作为人口在最佳点之下的证据。
But she says there is no credible evidence that positive thinking alone directly influences tumor growth.
但她说没有可靠的证据说明积极心态可以单独直接影响肿瘤生长。
Indeed, except to the extent that the compilation has itself been enacted into positive law, the original session laws are in principle the final evidence of the law.
实际上，除了汇编本身成为了活的法律之外，最初制定的单行法律在原则上只是法律的最终证据。
Indeed, except to the extent that the compilation has itself been enacted into positive law, the original session laws are in principle the final evidence of the law.
实际上，除了汇编本身成为了活的法律之外，最初制定的单行法律在原则上只是法律的最终证据。
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