Жители Санкт-Петербурга устроили «крысогон»17:52
Екатерина Графская (Редактор отдела «Наука и техника»)，这一点在Line官方版本下载中也有详细论述
，这一点在搜狗输入法下载中也有详细论述
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.
// 作用：通过最值判断是否需要扩展左/右边界（左侧最小值/右侧<最大值的元素都需纳入无序区间），这一点在heLLoword翻译官方下载中也有详细论述