while current_url and current_url not in self.seen_urls:
李 · 克劳是和乔布斯长期合作的广告总监，他帮苹果制作了《1984》和《不同凡想》（Think Different）两条经典广告。
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“This is just their normal space, where they connect,” Boeldt said, adding any attempts are “going to be kind of like whack a mole,” in which underage users will simply move on to the next platform.