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原標(biāo)題：真实14初次破初视频在线播放

　　免??(mian)疫??(yi)系??(xi)統(tǒng)??(tong)的?(de)核??(he)心??(xin)使??(shi)命??(ming)不??(bu)是??(shi)“消??(xiao)滅??(mie)一??(yi)切??(qie)”??，而??(er)是??(shi)識??(shi)別??(bie)敵?(di)我??(wo)、清??(qing)除??(chu)威??(wei)脅??(xie)??。??　　許??(xu)多??(duo)人??(ren)誤?(wu)以??(yi)為??(wei)“免??(mian)疫??(yi)力??(li)越??(yue)強(qiáng)??(qiang)越??(yue)好??(hao)”??，盲??(mang)目??(mu)服??(fu)用??(yong)補(bǔ)??(bu)品??(pin)、濫??(lan)用??(yong)保??(bao)健??(jian)品??(pin)??，結(jié)??(jie)果??(guo)反??(fan)而??(er)引??(yin)發(fā)??(fa)過??(guo)敏?(min)、自??(zi)身??(shen)免??(mian)疫?(yi)病??(bing)等??(deng)問??(wen)題??(ti)??。??事??(shi)實(shí)??(shi)上??(shang)??，免??(mian)疫??(yi)系??(xi)統(tǒng)??(tong)的??(de)精??(jing)髓??(sui)在??(zai)于??(yu)“動(dòng)??(dong)態(tài)??(tai)平??(ping)衡??(heng)”——既??(ji)能??(neng)高??(gao)效??(xiao)防??(fang)御??(yu)??，又?(you)不??(bu)失??(shi)控??(kong)攻??(gong)擊??(ji)自??(zi)身?(shen)??。這??(zhe)種??(zhong)平??(ping)衡??(heng)一??(yi)旦??(dan)被??(bei)打??(da)破??(po)??，就??(jiu)像?(xiang)過??(guo)度??(du)緊??(jin)繃??(beng)的??(de)琴??(qin)弦??(xian)??，稍??(shao)有??(you)不??(bu)慎??(shen)便??(bian)會??(hui)走??(zou)音?(yin)或??(huo)斷?(duan)弦?(xian)??。。