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解读商业思维：加一个签名，地摊10元旧书卖到2000元。
商业营销与玩法套路10/17
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![其实不是没看见，是莎莎刚抬手，大头以为她要击掌，马上响应，结果是擦汗。[呲牙][捂脸][强]#王楚钦孙颖莎](http://p26-sign.bdxiguaimg.com/tos-cn-p-0015c000-ce/owUAEfF7XHe6p4gWEBDAIkVv9jnwKClAciELfy~tplv-pk90l89vgd-fglass:864:486:90.jpeg?appId=32&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=101_middle_image&imageType=list&isImmersiveScene=0&is_stream=0&lk3s=9d3f5bff&logId=2024121216522220A2D497B058C20D248A&requestFrom=101&x-expires=1765529542&x-signature=hz8VbWkj2VUftbIyBtA%2BF2ck%2ByE%3D)
