The doctors have attributed the cause of the illness to an unknown virus.
医生们把这种疾病的起因归于一种未知的病毒。
Health officials in South Korea reported that a second person has died after being infected with an unknown virus.
韩国卫生官员近日通报第二位病人死于一种未知病毒感染。
A previously unknown virus had therefore been suspected for quite some time - but without conclusive confirmation.
在相当长的一段时间里，人们都怀疑是一种从前未知的病毒导致-但是没有任何确凿的证据。
In April, the CDC got a report from Navy researchers that a child in the San Diego area had been infected with an unknown virus.
今年4月，美国疾病控制和预防中心(CDC)收到来自海军研究实验人员的汇报，报告说有一名圣地亚哥地区的孩子感染上一种未知的病毒。
Compared with traditional character code matching method, these technology can prevent unknown viruses without virus library.
相对于传统的特征码匹配方法，这些技术不依靠病毒库，可以防范未知病毒。
Behavior-based analysis of currently unknown virus detection methods, necessary to run an executable file can be detected after, can not be detected in static form of computer virus file.
目前基于行为分析的未知病毒检测方法，需要可执行文件运行后才能检测到，无法检测出以静态形式存在计算机中的病毒文件。
This paper presents a method to prevent and clean new and unknown virus from a computer by means of analysing the process of a virus infecting usually. It can predict and clean new virus efficiently.
通过对计算机病毒常用的传染途径的分析，提出对新型未知病毒的消除与预防方法，从而可有效地防治新型病毒。
The ancestor virus - which, like many diseases, may have crossed into simians from another, still-unknown species - may have existed for millions of years.
这种病毒的祖先——像其他病毒一样，可能是其他病毒的混合体，仍是一种未知的病毒——可能几百万年前就存在了。
Still, there's this sense among many Americans, not just the pregnant ones, that the sheer novelty of the swine flu virus means that the vaccine is something wholly unknown, untested, risky.
很多美国人（不仅仅是孕妇）仍然认为，由于猪流感病毒是前所未见的，那么对抗猪流感的疫苗也是完全未知、未经过测试的，风险很大。
The findings may resolve some uncertainty about the nature of the virus, but much is still unknown about its origins and effects.
这些发现可能部分解决关于该病毒自然特性悬而未决的问题。但是关于病毒的起源和效应仍然不明确。
In order to prevent the Trojan invasion, the computer to install and update anti-virus software upgrade, not open the unknown email, no computer access to the internet.
为防止木马侵入，计算机要安装杀毒软件并及时更新升级，不随意打开不明电子邮件，严禁将涉密计算机接入互联网。
Objective To summarize the experience dealing with unknown diseases by the investigation and confirmation of collective acute gastroenteritis with Norwalk-like virus.
目的通过对诺瓦克样病毒胃肠炎集体爆发的调查和证实，总结处理不明原因疾病的经验。
This model can defend not only common viruses, but also variable viruses, polymorphic virus and unknown new viruses.
此模型不但可以防御常规病毒，而且可以防御变种病毒、多态病毒、以及未知新型病毒。
Although they appear necessary for HIV's survival, precisely what they do that the virus needs is unknown.
尽管已经证实它们对HIV的生存是有必需的，但是确切的作用机理还不清楚。
Then we present an algorithm to detect unknown network virus based on network dataflow.
通过基于流量的检测，实现对于新型未知网络病毒的挖掘。
We need to avoid complacency in dealing with a virus that is an unknown and seems to be spreading quickly.
在应对这样一个未知的，传播速度如此之快的流感病毒时，我们要切忌自满。
The source of the virus, the exact time of its introduction into Fort Dix, and factors limiting its spread and duration are unknown.
至于病毒的源头、传入迪克斯堡的准确时间、及局限其传播的因素和时段均不明确。
Arafat had been sick with an unknown illness that had been variously described as the flu, a stomach virus or gallstones.
阿拉法特一直身患某种不知名的疾病，关于他的症状有多种描述：流感、胃病毒感染和胆结石等。
It remains unknown if any of the amino acid changes were related to the ability of this virus to infect people.
仍然不清楚这种氨基酸的变化是否和病毒具有的感染人的能力有关。
The cause of SLE is unknown, but generally it is believed to be related to heredity, virus infection, intake of some medicines, exposure to ultraviolet ray and disturbance of endocrine function.
本病病因尚未清楚，一般认为与遗传、病毒感染、服用某些药物、紫外线照射、内分泌失调等因素有关。
The cause of SLE is unknown, but generally it is believed to be related to heredity, virus infection, intake of some medicines, exposure to ultraviolet ray and disturbance of endocrine function.
本病病因尚未清楚，一般认为与遗传、病毒感染、服用某些药物、紫外线照射、内分泌失调等因素有关。
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