use int if you have a small number of classes,
玩法五：P 图大师上线，能秒了 PS。51吃瓜对此有专业解读
The browser’s internal decoder handles the rest: decoding the codec, managing the playback timeline, and routing audio to the hardware.。heLLoword翻译官方下载对此有专业解读
Jason Bateman in "DTF St. Louis."