计算机病毒这一名词起因于在计算机上传染的有害程序与生物学中病毒的相似性。 The cause of the term "computer virus" is the likeness between the biological virus and the evil program infected with computers.
相似,类似不同事物的某些方面具有的相似性 Similarity in some respects between things that are otherwise dissimilar.