对音像图书文件进行自由管理，包括删除、添加、修改等操作

生物钟又称生理钟。它是生物体内的一种无形的“时钟”，实际上是生物体生命活动的内在节律性，它是由生物体内的时间结构序所决定-Also known physiological circadian clock. It is an invisible vivo " clock" is actually inherent biological rhythm of life activities, it is by the time structure of in vivo determi

vivo官网左右全屏动画焦点图，可以参考的网页效果。-vivo official website about movies to the full focus map, you can refer to pages effect.