问题标题：
【我要写一篇英文作文,关于AIDS的,】
问题描述：
我要写一篇英文作文,关于AIDS的,
耿志勇回答：
AIDS,standsforAcquiredImmuneDeficiencySyndrome,isadeadlydisease.Itmalfunctionsthehumanbody'sdefencesystem,makingtheinfectedpersonextremelyvulnerabletodiseases,andeventuallycausedeath.
AIDScanbespreadinmanyways,butthemainmediumisthroughhavingunprotectedintercoursewithaninfectedperson.Apartfromthat,AIDScanspreadfrommothertonewbornbaby,orsharingofneedles,shavingblades,oranymeansofbloodcontact.
Onceinfected,itmaytakeyearsforthepersontonotice,andintheseyears,theinfectedpersonmaynotknowandcaninfectmanymore,whointurngoandinfectothers,justlikeanexponentialgrowth.
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