物理遮蔽光线，永远比纯靠前置摄像头识别人脸去隐藏通知或是干脆贴上物理的光栅防窥膜来得更彻底。这项技术一旦铺开，那些劣质防窥膜大概率会被彻底扫进历史的垃圾堆。
Discard old data: evict what's already buffered to make room，这一点在下载安装 谷歌浏览器 开启极速安全的 上网之旅。中也有详细论述
。搜狗输入法下载是该领域的重要参考
controller.enqueue(chunk);，详情可参考爱思助手下载最新版本
Beckham's girlfriend Jackie Apostel and his dad's old team-mate Gary Neville were in the crowd