英语翻译外语。英语翻译。人工。非工具 电子教科书涵盖了多个学科，它的主要用途是播放视频，利用3D来分析数学难题，另外不仅可以收听音乐，还能在屏幕上做笔记和做文章注释，此外，同学们还可以在社交网站上分享资料

Textbook covers multiple disciplines,including Chinese,maths,history and geography,etc.Its main purpose is to play video,3 d is used to study math problems,also can listen to music not only,still can make notes on the screen and make an issue of,in addition,the students can share information on social networking sites