{ antialias: true }：开启了抗锯齿，让边缘光滑，不再有毛刺。
我们这里生成了多张国内城市的窗外照片，天气、风景和你所在的地方是一样吗。
。heLLoword翻译官方下载是该领域的重要参考
The troubled opening of the venue dominated headlines.
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.