病因目前还难以解释清楚。
The cause of the disease is difficult to pin down precisely.
医疗当局对其病因及有多致命都还不怎么了解。
Medical authorities were baffled, both as to its causes and its virulence.
科学家们已经发现一个似乎是亨廷顿病病因的遗传突变。
Scientists have found a genetic mutation that appears to be the cause of Huntington's disease.
尽管癌症的病因正被揭开，但我们还没有任何预防它的有效的方法。
Although the causes of cancer are being uncovered, we do not yet have any practical way to prevent it.
凯斯从希腊、意大利、克罗地亚、塞尔维亚、日本、芬兰、荷兰和美国的近1.3万名男性中收集了心脏病及其潜在病因的数据。
Keys gathered data on heart disease and its potential causes from nearly 13,000 men in Greece, Italy, Croatia, Serbia, Japan, Finland, the Netherlands, and the United States.
医生们难以判定她的确切病因。
Doctors found it hard to establish the precise nature of her illness.
抽烟是引起几种严重疾病的病因。
一直以来你都在怀疑自己的病因，你是在和一个无形的敌人斗争。
All the time you are in doubt about the cause of your illness, you are fighting against an invisible enemy.
专家们终于查明了她的病因。
没有一个医生知道这种病的病因。
钟南山花了很多时间来寻找病因。
氧自由基学说应该是老年性聋的发病病因。
The oxygen radicals theory should be the etiology of presbyacusis.
HHV-6B 原发性感染是儿童常见疾病猝发疹的病因。
HHV-6B primary infection is the cause of the common childhood illness exanthem subitum.
分析结直肠癌术后胃瘫综合征（PGS）发生的病因、治疗方法和疗效。
Analyze the etiology, therapeutic methods and curative effect of postoperative gastroplegia syndrome (PGS) after radical colectomy and proctectomy.
病因未详。
治疗内在病因对缓解疼痛很重要。
一些常见类型的贫血和它们的病因。
经前综合症的确切病因尚未完全了解。
KF：心脏病的病因是什么？
行政浪费之症“病因”何在？
贫血的治疗方法取决于病因。
哪个更是自闭症的病因：基因还是环境？
贫血有很多类型，每种都有不同的病因。
而对病因达成一致则花费了更长的时间。
And it took longer still to reach any kind of agreement on its cause.
心血管疾病是全世界致人死亡的头号病因。
Cardiovascular diseases of the heart and blood vessels are the number one cause of death around the world.
我患有这些症状最可能的病因是什么？
听力障碍和耳聋的病因。
传统的病因理论与西方科学大相径庭。
Traditional theories of disease causation are very different to those of Western science.
该病通常多发于年轻男性，脱水是主要病因。
Young men are the usual victims, and dehydration the main cause.
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