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sy = dst_height / roi_height
，这一点在体育直播中也有详细论述
The partnership drew scrutiny because of Flock’s reported ties to federal agencies. But the Flock spokesperson dismissed these ties as rumors, saying: “We do not have any contracts with any of them, which means they cannot directly access data on the platform.”
过去我们习惯拿手机去记录生活，而用眼镜去记录第一视角可以带给人不一样的体验，很新鲜。