It has been frequently assumed, but not proved, that the majority of the migrants in what has come to be called the Great Migration came from rural areas and were motivated by two concurrent factors.
人们常常假设，但没有证据证明，在所谓的“大迁移”中，大多数移民来自农村地区，这是由两个同时发生的因素推动的。
That means their safety and effectiveness is not proved.
这就意味着它们的安全和疗效并未得到证明。
These laws have not proved sufficient for closure of the problem.
要解决这一问题，这些定律尚不充分。
But 2 MCA stenosis diagnosed by TCCD were not proved by angiography.
造影未证实有狭窄的MCA血管中，TCCD检出2条有狭窄。
Its addictiveness was exposed, though not proved harmful, on “60 Minutes”.
60分钟"曾曝光其有致瘾性，伹并未证明它有任何危害。
The supposition is one that has been not proved for palindrome Numbers.
回文数猜想是一个未得到证明的猜想。
Conventional gaming has not proved as resistant to the recession as many had expected.
常规类游戏已经证明它未能如愿的抵挡住经济的衰退潮。
The idea that bigger is better in these respects has not proved true in the United States.
在许多方面，大的就是好的理念并没有在美国被证明是正确的。
Unilateral sanctions have not proved to be an effective way to change a country's behavior.
单方面制裁并不是改变一个国家的行为的有效办法。
Was it not proved nineteen hundred years ago - if I may trespass upon your domain a little?
如果我可以班门弄斧地说一句话，这不是在一千九百年以前就被证明了的吗？
However XLink has not proved generally popular as a core technology, and is not widely supported.
但是，XLink并没有作为一种核心技术而广泛流行，因而没有得到广泛的支持。
The peace process has improved things greatly in Northern Ireland but it has not proved a panacea.
和平进程使北爱尔兰状况大为改善，但却不是万灵药。
Beset with controversies, the Games have perhaps not proved too attractive for many who signed up.
困扰与争议，奥运会有可能不是太有吸引力了许多证明谁签署了。
Why give a million dollars to someone if they have not proved that they can make a million dollars?
对方还未能证明是否具有1百万美元的赢利能力，为何一下子就注资百万美元呢？
What is not proved and what does not exist are the same; it is not a defect of the law, but of proof.
不能证明的事实等同于不存在，这是证据的缺陷而非法律上的不足。
Her card clearly identified its owner as being 60 years old, but this had not proved a problem with the right official.
她手拿的注册卡清楚写着其主人已经60岁了，但这对于官员们来说不成问题。
Attempts to re-enact transporting the blocks on wooden rollers or floating them on the sea have not proved convincing.
之前的那些通过木制滚轴或在海洋上漂流的运输方法被证明是不可信的。
Would Dumbledore have let me teach at this great school, put so much trust in me all these years, had I not proved myself to him?
如果我没有向邓布利多证明我的能力，他会让我在这所优秀的学校里教书，这些年来会对我如此信任吗？
The judgement needs proving, need proving in order to form "law" of the judgement even more, "law" not proved lacks the exactness and acceptability.
判决需要论证，据以形成判决的“法律”更需要论证，不经过论证的“法律”缺乏正确性和可接受性。
While the so-called "7/7" attacks were not proved to be linked to the IOC's decision, it brought home how the city might be targeted during the Games.
尽管没有证据说明所谓的“7·7袭击事件”与国际奥委会的决定无关，但是这座城市会如何在奥运会期间成为攻击目标是显而易见的。
Experts stressed that the study had only found a link between hours worked and heart problems - it had not proved what had actually caused each death.
专家强调，该研究只发现工作时间和心脏问题之间有一定联系，并不能证明实际的死亡原因是什么。
However, the calculation procedure has not proved to be promising in that the complexity in calculation and does not produce an improvement in the precision.
在通常情况下必须进行迭代计算，计算过程比经典最小二乘法复杂，但解的精度不会有任何改善。
Experts say that new methods are needed because the standard practices - using insecticides and removing the standing water where mosquitoes breed - have not proved sufficient.
专家们表示，需要新方法，因为事实证明，使用杀虫剂及清除蚊子赖以繁衍的积水等常用作法不够有效。
These attempts have not proved universally effective for all patients with these mutations but suggest the potential to repurpose existing medicines to treat rare genetic forms of epilepsy.
这些治疗尝试虽然没能在所有基因突变的病人身上效验，但是似乎表明了一种可以运用现有药物治疗罕见癫痫基因的潜在效果。
They also pointed out that Kelly had "dismissed one argument cited by those who advocate closing the military prison at Guantánamo, saying it had not proved to be an inspiration for militants."
时报还指出，凯利“驳斥了支持关闭关塔那摩军事监狱的人提出的一个观点，称它并没有在激发激进武装分子的行动。”
Not speaking the language proved to be a bigger handicap than I'd imagined.
事实证明不会讲这种语言造成的障碍比我所想象的大。
The NASA team is now saying they have proved that they could not have been produced by the blast itself.
美国国家航空和宇宙航行局的研究小组现在表示，他们已经证明，它们不可能是由爆炸本身产生的。
If he did not do it, then the adventure would be proved to have been only a dream.
如果他不这样做，那么，那次冒险将被证明只是一场梦。
He proved that it's not what happens to us that determines our lives—it's what we make of what happens.
他证明了，决定我们生活的并不是发生在我们身上的事，而是我们如何看待发生的事情。
He proved that it's not what happens to us that determines our lives—it's what we make of what happens.
他证明了，决定我们生活的并不是发生在我们身上的事，而是我们如何看待发生的事情。
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