Three days later, Londonhousewife Luisa Carlill went down with flu. She was shocked. For two months,she had inhaled thrice daily from a carbolic smoke ball, a preventive measureguaranteed to fend off the flu-if you believed the advert, which she did.
请问: 这里的a preventivemeasure guaranteed to fend off the flu干什么成分？它是否做advert的同位语？到如此的语序让我有点不理解了，同位语可以如此排语序吗？
与哪个是同位语关系？
后面破折号里面的if条件从句和哪个有语义联系，有没虚拟的意思，这个条件从句的主句在哪儿？
整个段落应该怎么样翻译？
整个句子是否省略了一些内容？
我理解是: If you believed theadvert-a preventive measure garanteed to fend off the flu, you would do thesame as Luisa did. Because she believed the advert, she inhaled thrice dailyfrom a carbolic smoke ball for two months.但如此是两句话，这段英文把这两句话糅合成了一句话，但这个糅合的过程我确实看不知道，望得到指点，当然如此的个人理解可能是不对的？
Three days later,London housewife Luisa Carlill went down with flu. She was shocked. For twomonths, she had inhaled thrice daily from a carbolic smoke ball, a preventivemeasure guaranteed to fend off the flu-if you believed the advert, which shedid.
请问: 这里的apreventive measure guaranteed to fend off the flu干什么成分？它是否做advert的同位语？到如此的语序让我有点不理解了，同位语可以如此排语序吗？
与哪个是同位语关系？
【答】a preventive measure guaranteedto fend off the flu 是名词词组，作前面这个句子 shehad inhaled thrice daily from a carbolic smoke ball 的同位语。这个句子其实就是描述了一种预防流感的具体做法，而a preventive measure是它的同位语，把它总结为“预防手段”。由于同位语的两个成分之间是互为同位关系，所以，前句假如放在名词a preventive measure 之后的话，就是一个同位语从句。
后面破折号里面的if条件从句和哪个有语义联系，有没虚拟的意思，这个条件从句的主句在哪儿？
【答】if you believed the advert,which she did 是条件从句，陈述语气，它与前句有语义联系。它的主句是 she had inhaled thrice dailyfrom a carbolic smoke ball, a preventive measure guaranteed to fend off the flu，这个主句就是一个活生生的广告宣传 advert。
在 if you believed the advert,which she did. 中，whichshe did 是定语从句。这里，which 可以指代believed the advert，定语从句用 did 加大语气；或者 which 指代adevet，用did替代believed。
整个段落应该怎么样翻译？
【翻译】三天后，伦敦家庭主妇路易莎·卡莱尔患了流感。她非常震撼。两个月来，她天天都从一个碳烟球中吸气三次——假如你相信这是广告宣传的话，这的确是一种预防流感的手段，而她却坚信不疑。（我把语序适合变通了一些）
整个句子是否省略了一些内容？
我理解是: If you believed the advert-a preventivemeasure garanteed to fend off the flu, you would do the same as Luisa did.Because she believed the advert, she inhaled thrice daily from a carbolic smokeball for two months.但如此是两句话，这段英文把这两句话糅合成了一句话，但这个糅合的过程我确实看不知道，望得到指点，当然如此的个人理解可能是不对的？
【答】网友的理解有失偏颇，可以参照我上面我的解答。
