Such hypotheses are difficult to prove.
这样的假设很难去证明。
The charges will be difficult to prove.
这些指控很难证明成立。
It will be difficult to prove his guilt.
要证明他的罪状不容易。
Its effect on the drought is difficult to prove.
大坝对干旱的影响很难证实。
It is easy to prove that it is difficult to prove it.
织罗罪名容易，证明起来就难了。
It is difficult to prove whether space life exists or not.
要想证实外星人是否存在非常困难。
Verily, it is difficult to prove all being, and hard to make it speak.
其实，想检验所有的存在相当困难，也很难使它开口说话。
Without adequate auditing, repudiation attacks are difficult to prove.
如无适当的审计，拒付是很难证实的。
This is one of many reasons why intentionality is so difficult to prove.
这是很难断定故意与否的原因之一。
It is difficult to prove whether their actions were negligent or intentional.
很难证明他们的行为事故意的还是无心的。
Some people think that it is difficult to prove the existence of the unconscious mind.
马克思说不是意识决定存在，而是社会存在决定人民的意识。
And there are good reasons for being skeptical of making assumptions that are difficult to prove.
而且有很好的理由来怀疑这个验证是困难的假设。
Without corroboration from forensic tests it will be difficult to prove that the suspect is guilty.
没有法医化验的确证就很难证明嫌疑犯有罪。
The relationship between fruits and vegetables and cancer prevention has been more difficult to prove.
水果和蔬菜跟预防癌症之间的关系已经变得更难去证明了。
But cases of intuition are difficult to prove or study, and psychology may only be part of the answer.
但是，直觉的案例很难证明，也很难分析，而心理学家也可能只是答案的一部分而已。
But this phenomenon is difficult to prove since the extent of crowding out will vary with the economic cycle.
但这种情况不可一概而论，因为“挤出”的程度因经济周期而不同。
While the link is difficult to prove, there is some evidence that Gaucher disease does increase a person's IQ.
然而还很难证明这两者存在必然的联系，但是有证据表明高雪氏症确实能提高患病者的智商。
Even when a side effect is suspected, it can be very difficult to prove that it was directly caused by the drug.
即便有时察觉到由副作用，也很难证明它是由药物直接引起的。
Remember that, if problems arise after cleaning, it is very difficult to prove any verbal statement or agreement.
请记住，如果出现问题后的清洁，这是很难证明的任何口头声明或协议。
Though the associations between pet ownership and higher well-being are intriguing, causation's difficult to prove.
尽管饲养宠物和更强幸福感之间的关系令人十分感兴趣，但是其因果关系很难证明。
Until the 20th century, it was difficult to prove that a particular man was the biological father of a particular child.
在20世纪以前，想要证明某一特定男子是某一特定孩子的生父非常困难。
Additionally, because symptoms like headaches are so general and hard to pin to one cause, it's difficult to prove correlation.
加之，像头疼之类的症状如此普遍很难将它归因于某个特定因素，因而很难证明其相关性。
Developing nonblocking algorithms is a rather specialized discipline, and it can be extremely difficult to prove their correctness.
开发非阻塞算法是相当专业的训练，而且要证明算法的正确也极为困难。
It maintains that it is difficult to prove the positive opinion wrong, but the term of "interdisciplinary course" is not perfect.
文章指出，肯定派意见难以证伪，但“边缘学科”就名称来说并非尽善尽美。
The surplus might well have been larger had the yuan not risen, some economists say, but it is difficult to prove that conclusively.
一些经济学家说，要是人民币没有升值，顺差很可能会更大。但这种观点难以确切地予以证明。
Whether or not stretching prevents injuries is difficult to prove. If you stretch too much, or too hard, you actually can increase your risk of injury.
拉伸是否可以预防受伤是难以确认的，如果你拉伸太多，或过度，事实上会增加你受伤的风险。
But when people appear to recover, it is difficult to prove that later problems really are a food-poisoning legacy and not some unfortunate coincidence.
但是病人一旦痊愈就很难证明后来的问题是食物中毒遗留问题，还是不幸的巧合。
The small sample size for some tests makes it difficult to prove that the new product would not trigger a greater allergic reaction in people already sensitive to salmon.
一些测试只采用了小分量的样品，很难证明这种新产品不会使那些本身就对鲑鱼敏感的人产生更严重的过敏反应。
The suspicion that congressmen often push through earmarks benefiting certain firms or institutions in exchange for campaign contributions is difficult to prove, but commonplace.
国会议员是否经常通过特别拨款来施惠于特定公司或机构以换取竞选捐献，这样的猜疑虽然难以证实，但却在意料之中。
The suspicion that congressmen often push through earmarks benefiting certain firms or institutions in exchange for campaign contributions is difficult to prove, but commonplace.
国会议员是否经常通过特别拨款来施惠于特定公司或机构以换取竞选捐献，这样的猜疑虽然难以证实，但却在意料之中。
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