So you head to a doctor, who may run a test or two. But no clear cause for the symptom shows up.
于是你去看医生，医生也许会给你做一两项检查，但却找不出导致这些症状的原因。
Objective To evaluate the diagnostic value of DSA in digestive canal bleeding without clear cause.
目的评价数字减影血管造影(DSA)检查不明原因消化道出血的价值。
A military alliance that stretches across the Atlantic will not always be able to unify around such a clear cause.
横跨大西洋的军事联盟并不总是在诸如此类的目标上形成统一认识。
This recently released image from the Hubble Space Telescope shows many new details, but has not uncovered a clear cause of the bright sharp arc.
这幅最近公布的哈勃太空望远镜图像显示了更多新细节，但是明亮倒V字的明确原因依然没有被揭示出来。
The Healthy Management Cycle with clear cause-effect relationship is to prevent and control the most important, variable, preventable, curable risk factors for health.
健康管理循环紧紧围绕预防控制当今最主要的、因果关系清楚的、可变、可防、可治的健康危险因素。
Results 286 cases had clear cause, the disease cause of 212 cases were respiratory tract infection, 74 cases were infection of digestive canal and 150 cases was unclear.
结果286例儿童热性惊厥有明确病因，分别为呼吸道感染212例，消化道感染74例，原因不详150例。
Results: 286 cases had clear cause, the disease cause of 212 cases were respiratory tract infection, 74 cases were infection of digestive canal and 150 cases was unclear.
结果：286例热性惊厥儿童有明确病因，分别为呼吸道感染212例，消化道感染74例，原因不详150例。
And the message that we send in the midst of these storms must be clear: that our cause is just, our resolve unwavering.
今天我在风暴中心传递的信息应当是清晰的：那就是我们的事业是正义的，我们的决心是不可动摇的。
"We have not had a clear understanding of what is driving this melting because the atmospheric forcing - the temperature at the surface - is not warm enough to cause such a melting," he added.
“我们对什么在推动这一冰融尚无明确的认识，因为大气促成的-表面温度-还没有热到足以导致如此的冰融，”他补充说。
That fear may cause others to create roadblocks for you to overcome through an understanding and clear communication of the new system's benefits.
这个担心可能会导致其他人妨碍您，需要通过了解并清楚地沟通新系统的好处来加以克服。
The investigators say the link between cardiac problems and overtime seems clear but the cause is less so, given the complexities of heart disease and relationships in the workplace.
调查人员表示，心脏问题与加班加点之间的关系看似十分明显，但鉴于心脏病和职场关系的复杂性，原因没有看起来那么清楚。
As more related variants are identified, it has become clear to researchers that the cause of schizophrenia will never be pinned on one or several genes or one physiological pathway.
随着更多相关变异得到识别，研究人员也就能够清楚精神分裂症的原因，而不会钉死在一个或几种基因，或一种生理途径上。
Ban, speaking Tuesday in New York, said evidence showing climate change happening much faster than anticipated is "quite clear," as is data that humans are the primary cause.
潘基文星期二在纽约讲话时说，气候变化发生的速度比预期要快很多的证据“相当明显”。同样，人类活动是主要原因的数据也很充足。
Whether or not the cleaning products are a direct cause of asthma, or simply a trigger for people who already have the disease, isn't clear from this epidemiological study.
但这次的流行病学研究并没有清楚的表明，清洁产品是导致哮喘的直接原因还是仅仅只是哮喘患者的诱因。
So far, it is not clear whether the strain is spreading beyond farms to cause infections elsewhere in the population.
到目前为止，不清楚这个菌种是否正在向农场造外其他地方的人口蔓延。
But their indirect environmental "bads" -competition with food crops, the need to clear virgin land to grow them, and the energy costs of processing them-all cause anguish.
但它们的间接影响：与粮食作物的竞争，额外开垦荒地种植的需要，还有在提炼过程中的消耗能源——所有都会造成影响。
And the cause is clear, say the authors: 'It is very likely that [man-made] greenhouse gas increases caused most of the average temperature increases since the mid-20th century,' says the report.
原因是显而易见的，作者说：“自从20世纪中叶，很有可能是[人造的]温室气体的增多导致大多数平均气温的提升。”，报告说。
If we all agree that carbon dioxide emissions are the direct cause for climate change, then it is all too clear who should take the primary responsibility.
如果说二氧化碳排放是气候变化的直接原因，谁该承担主要责任就不言自明。
The cause of appendicitis isn't always clear. Sometimes appendicitis can occur as a result of.
有时我们无法找到患阑尾炎确切的原因。
And therein liesthe rub.Companies that are founded with a clear sense of a higherpurpose or cause exist to advance that cause, with time and success,inevitably lose that sense of purpose.
有着清晰目标和梦想的公司的存在是为了追逐理想，但随着时间的推移和随之而来的成功，她们不可避免地失去了目标感。
As long as the water is clear enough not to absorb the rays, exposing it to a discharge lamp will destroy the DNA of viruses, bacteria and protozoa that could otherwise cause illness when swallowed.
只要水足够清澈不吸收光线，放到放电管下就会破坏水中能引起疾病的病毒、细菌和原生动物的DNA。
However, a direct cause-and-effect isn't clear, said the team at the Charite Universitatsmedizin Berlin and of the Physikalisch-Technische Bundesanstalt (PTB), the German National Metrology Institute.
然而，并不能确定者之间有直接的因果联系，德国柏林夏洛蒂医科大学和德国标准计量机构-国立计量研究院的研究团队说。
Anxiety and depression are also more common in patients with obesity, though it is not often clear which is cause and which is consequence.
不安和抑郁情绪也常见于肥胖患者，但还不能确定哪是因哪是果。
It may cause lots of issues to people around. Showing your superiority and making things clear to others is more honest.
这容易对周围的人造成许多问题。展示你的优势，把事情讲清楚，这是更加诚实的做法。
Though China has a clear vision, some funds and technologies and is committed to the cause, aligning the vision, policy, money, technologies is still an uphill task for it, she said.
她说，尽管中国拥有清晰的愿景、足够的资金和技术，中国也承诺达成，但调整愿景、政策、资金、技术仍然是一个困难的任务。
It is a clear, sunny day and the roads contain no obvious hazards that would cause problems with traffic.
这是一个阳光明媚、晴朗无云的日子，道路上没有任何明显会导致交通堵塞的危险物。
Although the agencies' models make it clear what rating they will give a bond on issue, it is less clear what will cause them to downgrade it later on.
尽管这些公司的运行模式在如何评级发行公司上已经有了明确的标准，但是在如何给发行公司降级这方面标准仍不明确。
Although the agencies' models make it clear what rating they will give a bond on issue, it is less clear what will cause them to downgrade it later on.
尽管这些公司的运行模式在如何评级发行公司上已经有了明确的标准，但是在如何给发行公司降级这方面标准仍不明确。
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