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当时，英伟达股价一度下跌近 17%，瞬间蒸发 6000 亿美元。
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PReLU: 斜率可学习，更灵活
If you’re looking for an instant camera that offers the most old-fashioned, instant-film experience, the Polaroid Flip is the camera for you. It resembles vintage instant cameras like the Polaroid 600 more than any other camera on our list, thanks to its classic, retro-inspired design and flip-up lid. Its square I-Type film prints and iconic white frame give photos an authentically vintage look, while modern touches like Bluetooth, USB-C charging, and a beginner-friendly companion app add greater convenience and creative control.