The virus stays in you longer because your body doesn't develop a way to fight it and kill it.
你的身体没有产生抵抗与杀死病毒的办法，因此病毒在你体内存活的时间更长了。
Meanwhile, the deadliest strains of the virus perished with their hosts as natural selection favored strains that could infect hosts but not kill them.
同时，由于自然选择更倾向于选择那些能够感染宿主但不致其死亡的病毒，这种致命病毒便随着宿主的死亡而消失。
The locals were encouraged to trap and kill mice to stop the spread of the virus.
当地人被鼓励用捕捉器捕杀老鼠以阻止病毒的传播。
It can even help solve present-day problems: In 2015, scientists discovered that a 10th century English medicine for eve problems could kill a drug-resistant virus.
它甚至可以帮助解决当今的问题。2015年，科学家发现10世纪英国的一种治疗前夕问题的药物可以杀死抗药性病毒。
Once inside the cell, if the RNA computer finds tracers of a virus or cancer it could release the appropriate drugs to kill just that one cell.
RNA计算机一旦进入某一细胞内部，如果发现病毒或癌症的踪迹，它就可以释放相应药物来仅仅杀死这一个细胞。
So scientists wondered if it could kill the HIV virus as well.
所以科学家们想知道它是否可以有效的杀死HIV病毒。
Given a few key variables, such as how often viral genes shuffle inside cells, his equations can provide the minimum mutation rate to safely kill a virus.
他的方程序给出了一些关键的变量，比如病毒基因在细胞内的变异速率，这些可以帮助研究人员安全地杀死病毒。
But this virus can kill and does so in a comparatively young age group.
但这一病毒可以致命，而且确实在较年轻年龄组致人死命。
The virus responsible for the 1918 pandemic caused only mild disease at first but evolved in ways that made it able to quickly kill previously healthy people.
引发了1918年流行病的病毒最初只导致了轻微的疾病，但随着后来的进化，原本健康的人也会因它而很快致死。
Apparently not even a deadly virus can kill the travel bug in some folks.
显然对有些人而言即便是致命的病毒也不可能杀死他们的旅行。
Public health experts know that there are other good uses for those billions, but even if the virus remains no more dangerous than the typical seasonal flu, it will kill thousands of Americans.
公共卫生专家知道对那几十亿元也可以有其他好用途，但即使病毒的危害性仍然和一般季节性病毒一样，它还会夺去数千美国人的生命。
Many experts worry that the virus could kill large Numbers worldwide if it starts to spread easily from person to person.
许多专家开始担忧，如果禽流感病毒能随意在人群传播的话，那么禽流感将夺取许多人的生命。
Alan Hampdon, an Australian influenza expert, has said the virus had to capacity to infect 25 per cent of the population and kill up to 7, 000 people.
澳大利亚流感专家AlanHampdon说，猪流感病毒可能传染给25％的人群，死亡人数可能达到7000人。
A drug that blocks the messenger chemical or limits its production might protect infected patients from their own immune system while they receive flu drugs that can kill the virus itself.
一种能阻滞或者限制信使分子产量的药物有可能保护被感染的患者不受自身免疫系统的损害，同时，患者服用流感药物可以杀死流感病毒。
The researchers engineered a virus that infected a patient's T-cells, a type of white blood cell, and carried instructions to bind to cancer cells and ultimately kill them.
研究人员研制出一种病毒，这种病毒可以感染患者的一种白血细胞T型细胞，并接受指令与癌细胞结合在一起，并最终杀死癌细胞。
The most lethal viruses tend to be short-lived because they kill their host before the virus has had a chance to be passed on.
致死力最强的病毒往往很短命，因为它们很快就杀死了宿主（被感染的人），从而失去了到处传播的机会。
If the virus can't kill, have to reinstall the system.
如果病毒杀不了，就只能重新安装系统了。
For example, some viruses have been known to kill mosquitoes, but scientists have been frustrated in their efforts to come up with a way of transmitting the virus to the mosquitoes.
例如，已经知道一些病毒可以杀死蚊子，但是科学家没有能够成功地找出一种方法将病毒传播给蚊子。
"We created a genetically modified HIV virus. It converts white blood cells and then those cells find the infected cells and kill the virus in them," Kang explained.
“我们发明了一种基因上做了调整的HIV病毒。他能转化白细胞，让这些细胞去找那些被HIV病毒侵袭了的细胞并杀掉里面的病毒”，康博士解释。
When artificially infected with the virus, all animals and plants so far tried either die or kill the virus — except bats.
当所有的受试动物和植物感染此种病毒后要么被病毒消灭要么消灭病毒之时，只有编蝠是个例外。
High temperature, dry and common disinfectants can kill the virus.
高温、干燥以及常用消毒剂都可以杀灭这种病毒。
Be responsible for the security and confidentiality of the hotel computer system. Take preventive measures to computer virus and kill virus regularly.
负责饭店电脑方面的安全及保密工作，做好各种病毒的预防和定期杀毒。
Phages are a special kind of virus because they only infect and kill bacteria. They don't infect humans or other animals.
噬菌体是一种特殊的病毒，它只会感染和杀死细菌，不会感染人类或其它动物。
A virus with the potential to kill up to half the world's population has been made in a lab.
一种具有杀死半数世界人口潜能的病毒已经在实验室生产出来。
Ever since 2004, researchers have known that the H5N1 avian flu virus can infect and kill domestic cats.
自2004年起，研究人员已经知道H5N1禽流感病毒能感染并杀死家猫。
Ever since 2004, researchers have known that the H5N1 avian flu virus can infect and kill domestic cats.
自2004年起，研究人员已经知道H5N1禽流感病毒能感染并杀死家猫。
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