您的牙龈是不明原因的出血吗？
反复出现的不明原因的高热。
他也有不明原因的出血和抱怨他的脖子上的金属芯片。
He also has unexplained bleeding and complains about a metal chip in his neck.
目的为确诊某厂一起不明原因的暴发性疾病及研究其发生原因。
Objective To explore the cause on outbreak of an unknown disease in a factory.
原因不明的死亡是难以接受的。
造成死亡的直接原因不明。
去年四月，当我回到那儿，这条龙的头部由于不明原因而倒塌了。
When I returned there last April, the dragon's head has collapsed for unknown reason.
但由于一些不明的原因，身体发现这蛋白有点不妙。
But for some unclear reason, the body looks at the protein and sees Trouble.
如果原因不明，那就应当执行实例的完全恢复。
If the cause is unknown, then you should perform a full recovery of the instance.
不过原因不明的体重突降也许更值得担。
But sudden, unexplained weight loss can be even more worrisome.
他的同事说，2004年他失去了工作，原因不明。
In 2004, colleagues said, he lost that job for reasons that were not clear.
但这个新创说法是不明智的，并非仅仅基于上述原因。
任何疾病特别是原因不明的新的传染性疾病，都是全人类的共同敌人。
All diseases, particularly new infectious diseases of unknown causes, are common enemies to entire mankind.
有几位曾患不明原因骨折的女士旁听了这次会议。
Several women who have suffered the unusual fractures testified at the meeting.
尽管今天的宇宙几乎完全是由物质所构成的，可是科学家们还不明白其原因。
Though the universe today is almost completely made of matter, scientists don't understand why.
其中的原因还不明朗，但这显然和空间感有关。
The reason for this is still uncertain, but it is obviously related to spatial ability.
不幸的是，现在这种启发式的方法并不总是管用。这也是其推荐特征并不明显的原因。
Unfortunately, the current heuristic does not always work, which is why it is not obvious.
飞机坠毁原因不明，是由经济学的学科。
癌症与其他某些疾病的根本原因始终不明。
The ultimate causes of cancer and other diseases are still unknown.
导致超过18岁而滴酒不沾的年轻人数量增加的原因尚不明确。
Why the number of teetotaling 18-year-olds is up isn't clear.
我不明白他这样做的原因。
目的探讨不明原因长期发热(FOU)患儿的病因及诊断方法。
Objective To study the origin and diagnostic method for children fever of unknown origin (FOU).
目的探讨不明原因发热的病因分布特点。
Objective To investigate the causes of fever of unknown origin.
发布禁令的原因不明。
目的：探讨不明原因发热(FUO)的病因。
Objective: To investigate the cause of fever of unknown origin (FUO).
目前这一重大事故的原因不明。
造成这些问题的原因是教育心理学的学科对象不明确。
The cause is that the subject objective of education psychology is not clear.
造成这些问题的原因是教育心理学的学科对象不明确。
The cause is that the subject objective of education psychology is not clear.
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