Ebola is not as easily spread as viruses such as smallpox.
埃博拉病毒不像天花这类病毒那样容易传播。
Most forms of the common cold and flu are caused by viruses.
大部分的普通感冒和流感都是病毒引起的。
Was there a sudden change in the viruses and bacteria around?
周围的病毒和细菌是否突然发生了变化？
This is why many viruses, such as measles, make us ill only once.
这就是为什么许多病毒，如麻疹，只会使我们生病一次。
新的病毒每天都会出现。
可是病毒怎么办？
How many swine flu viruses are there?
现在有多少种猪流感病毒？
You know how flu viruses mutate.
你知道病毒如何发生变异。
We can get viruses from the Internet.
我们的计算机能从互联网上感染病毒。
These viruses are of no risk to humans.
这些病毒对人类没有危险。
These attachments are probably viruses.
这些附件很可能是病毒。
What are the different hepatitis viruses?
都有哪些不同的肝炎病毒？
Therefore, viruses have that same access.
这样一来，病毒也得到了相同的访问权。
Update and scan your computer for viruses.
升级你的病毒库并扫描杀毒。
Q: What are the different hepatitis viruses?
问：都有哪些不同的肝炎病毒？
Gene sequencing information on human viruses.
对人类病毒的基因排序信息。
The virus combines human, bird and pig viruses.
这种病毒结合了人类，鸟类和猪类的病毒。
The viruses can be transmitted from there by flies.
病毒可从这里经苍蝇散播他处。
Human infections with swine flu H1N1 viruses are rare.
人类感染H1N 1猪流感病毒的病例很少见。
Is the H1N1 swine flu virus the same as human H1N1 viruses?
H 1 N 1猪流感病毒与H1N1人流感病毒是一样的吗？
Amoebas turn out to be great places to seek out new viruses.
变形虫变成寻找新病毒的好场所。
Pandemics, like the viruses that cause them, are unpredictable.
同造成大流行的病毒一样，大流行变幻莫测。
Most such viruses now in trials are injected directly into the tumor.
在目前的试验中，大部分此类病毒都是直接注射到肿瘤位置。
Unlike biological viruses, computer viruses are written by a programmer.
与生物病毒不同，计算机病毒是由程序员编写的。
For one thing, some viruses may be too well hidden for scientists to see.
一方面，某些病毒可能隐藏太好以至于科学家难以发现。
They are there to kill germs, kill viruses. Or,they might react to an allergen.
看，这就是抗体的作用，它们在那里杀死细菌，杀死病毒，或者，它们可能会对过敏原作出反应。
It 's very dangerous to be exposed to these viruses without any protection.
不加任何保护，直接暴露在这些病毒下是十分危险的。
If there are three different viruses in the cell, even more combinations are possible.
如果细胞里有三种不同的病毒，就可能产生更多的组合。
If there are three different viruses in the cell, even more combinations are possible.
如果细胞里有三种不同的病毒，就可能产生更多的组合。
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