"We chose a threshold that requires a few searches within a short period of time, while still erring on the side of caution," Instagram's blog post explains. "While that means we may sometimes notify parents when there may not be real cause for concern, we feel — and experts agree — that this is the right starting point, and we’ll continue to monitor and listen to feedback to make sure we’re in the right place."
Фото: Wahidullah Kakar / AP
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Scientists have captured a beautiful image in unprecedented detail of the vast Milky Way galaxy, of which our own solar system is a part.，更多细节参见夫子
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英伟达黄仁勋：年内将寻机进行资本运作