Watermarking the viewer's name tracks the origin of any illegal copy.
观者姓名的水印跟踪防止任何非法拷贝泄漏。
Yet the truer picture was told by a 6.34 per cent fall in single copy sales, the figure that tracks magazines bought at supermarket check-outs, book stores and news-stands.
但6.34%的单本销量降幅反映了更加真实的画面。单本销量追踪的是在超市付款处、书店和报摊售出的杂志数量。
Yet the truer picture was told by a 6.34 per cent fall in single copy sales, the figure that tracks magazines bought at supermarket check-outs, book stores and news-stands.
但6.34%的单本销量降幅反映了更加真实的画面。单本销量追踪的是在超市付款处、书店和报摊售出的杂志数量。
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