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"The way the trend is moving is definitely toward some kind of persistent verification of a user's age," Kaufmann said. In other words, a digital proof of age that travels with the user across platforms.
。新收录的资料是该领域的重要参考
// Implementation for foldForest() goes here。关于这个话题，新收录的资料提供了深入分析
Фото: Kevin Lamarque / Reuters，详情可参考PDF资料