近日，全国各地有很多人进行反映，自己在三大运营商办理业务的时候，业务员会承诺免费送出礼物，但是实际上却并不是免费获得的，而是需要用户以信贷的方式进行担保，才能获得相应的礼物，换句话来讲，用户需要和运营
I have just installed paperclip into my ruby on rails blog application. Everything is working great...too great. I am trying to figure out how to tell paperclip not to output anything if there is no r
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