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Whereas the Flip is huge, the second-gen Polaroid Go is tiny. It weighs just over a pound and fits easily in the palm of my hand — which is saying a lot, given I’m petite and a little over five feet tall — making it the most portable instant camera on our list. If its images were more true to life and didn’t require you to sheild them from the light for about 15 minutes while developing, I’d call it the best instant camera for kids or travel.
。业内人士推荐Line官方版本下载作为进阶阅读
Andrew uses only 39 keys on each of his keyboards，详情可参考91视频
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激活函数的核心作用就是为神经网络引入非线性。