但无论是 OLED 像素发光还是 LCD 背光板发光，它们发出的都是（近似）全向的光线——你能看到，你旁边的人也能看到：
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2012 年 3G 手机出货量是 2.65 亿部，比去年同期增长了 81.4%，到了 2014 年，3G 手机下滑，4G 手机销量暴涨。
"We've had to very quickly become keenly aware of the fact that we are being watched in a really intense and new way by the government and their partners and Big Tech," said Hunt. "And that collusion is out in the open."。关于这个话题，体育直播提供了深入分析