1. 滤过性病毒：2、从病理学角度出发:呼吸道疾病的致病原为:原生质卡答儿,霉浆菌(mycoplasma),趜菌病(fungi),毛滴虫(trich-omanas),嗜血菌家加答儿(hemophilusbacteria)滤过性病毒(virus)或寄牛虫等.

2. 计算机病毒：病毒 计算机 病毒(Virus)是一段具有危害作用、并且能够自我复制的程序 代码 . 计算机病毒具备破坏性和传染性,主要通过电子邮件、 文件 下载、 网络 访问、移动介质等 形式 进行传播,可造成 数据 破坏、 系统 异常、网络瘫痪. 广义上的计算机病毒概念

3. 电脑病毒：第 12 章 电脑病毒(Virus) 电脑病毒泛指会 停的复制自己, 影响电脑正常运作的 意程式.在本章会分别介绍三种 同的病毒形态:第一种是狭义的病毒,其藉由磁片 感染进 破电脑病毒(Virus)在早期的个人电脑单人单工作业系统DOS上,

1. 病毒
    A virus is a kind of germ that can cause disease.

    e.g. There are many different strains of flu virus.
           流感病毒有很多不同类型。
    e.g. ...HIV, the virus believed to cause AIDS. HIV
           ，一种据信会引发艾滋病的病毒

2. 病毒
    In computer technology, a virus is a program that introduces itself into a system, altering or destroying the information stored in the system.

    e.g. Hackers are said to have started a computer virus.
           据说黑客们已经开始传播一种新的电脑病毒。

1. (virology) ultramicroscopic infectious agent that replicates itself only within cells of living hosts
    many are pathogenic
    a piece of nucleic acid (DNA or RNA) wrapped in a thin coat of protein

2. a software program capable of reproducing itself and usually capable of causing great harm to files or other programs on the same computer

    e.g. a true virus cannot spread to another computer without human assistance

    Synonym: computer virus

3. a harmful or corrupting agency

    e.g. bigotry is a virus that must not be allowed to spread
           the virus of jealousy is latent in everyone