The immediate cause of death is unknown.
造成死亡的直接原因不明。
The cause of her death is still unknown.
关于其死亡的原因至今还未知晓。
Or there may be an as yet unknown cause of some cardiovascular pathology.
也可能有某种至今未知的原因导致心血管疾病。
原因：未知。
The cause of the crash is still unknown.
此次失事的原因尚不清楚。
The cause of the accident remains unknown.
事故的原因仍不清楚。
Or there may be an as yet unknown cause of cardiovascular pathology.
亦或，存在一种至今仍不为人们所知的引发心血管疾病的病因。
If the cause is unknown, then you should perform a full recovery of the instance.
如果原因不明，那就应当执行实例的完全恢复。
原因仍不明。
Unknown to many people, herbal remedies can cause serious side effects in some patients.
很多人都不知道，草本疗法可能会对患者造成严重的副作用。
Exactly which bacteria cause the infection is still unknown.
细菌是如何导致传染病的，目前还是未知的。
In many cases, the cause of congestive heart failure is unknown.
在许多情况下，导致充血性心力衰竭是未知之数。
The cause of the fire is still unknown.
飞机失火原因目前仍未所知。
Despite many years of research, the cause of FIC remains unknown.
尽管研究多年，仍旧无法得知此病的起因。
The exact cause is unknown, but we are in the process of restoring services.
具体原因还不清楚，但我们在恢复服务的过程中。
Release of the ban on the cause is unknown.
发布禁令的原因不明。
They were never autopsied, and the cause of death remained unknown.
但是并没有进行验尸，死因不明。
The cause of the fire was unknown, and it was not clear how many of the injured were children.
火灾原因不明，也不清楚伤者当中有多少是儿童。
The ultimate cause of the disease is unknown, though it is believed to be hereditary.
尽管它具有遗传性，但最根本的病因还未知。
The specific cause of astigmatism is unknown.
引起散光的确切原因目前还不清楚。
The cause is unknown, but it may be mediated by the immune system.
病因不明，但可能是免疫系统介导的。
Objective To explore the cause on outbreak of an unknown disease in a factory.
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。
The cause of sarcoidosis is still unknown.
结节病的病因至今不明。
The cause of the aircraft crash is so far unknown.
尚不知飞机坠毁的原因。
In most cases of congenital heart disease, the cause is unknown.
在大多数情况下，先天性心脏病，原因是未知之数。
The exact nature and cause of tumor growth are still unknown.
肿瘤生长的具体特性及原因尚不清楚。
The cause of the aircraft crash is so far unknown.
尚不知飞机撞毁的原因。
Yet the cause and cure for the mental sickness are still unknown.
但是精神疾病的病因和疗法还是不得而知。
AMD is associated with aging, but the exact cause is still unknown.
AMD与年龄有关，但确切原因仍不知道。
AMD is associated with aging, but the exact cause is still unknown.
AMD与年龄有关，但确切原因仍不知道。
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