Optical-based smoke alarms use light instead. They are slightly better at detecting the large smoke particles created by slow, smouldering fires. When such particles enter a chamber in the device, they scatter light from a small light source, which is then picked up by a photoelectric sensor.
在喧嚣尚未散去之际，他选择推出的，却是一张与胜利叙事不相干的唱片——舒伯特钢琴即兴曲。那不是一张赛后纪念专辑，也不是身份确认，而更像一次回撤：从比赛的中心退回音乐本身，从外部的评价回到内在的节奏。
。heLLoword翻译官方下载对此有专业解读
（六）提供网络游戏服务的，应当采取监测发现、防范、阻断、处置违法信息传播，变相从事赌博活动，网络虚拟财产异常、可疑变动情况的措施；
Despite Discord's assurances, he says he would not trust his data would be kept secure if required to verify his age.