english audiobooks - with ted
通过世界各地的精彩演讲学习英语。 所有演示文稿都有英文和其他语言的视频，字幕和成绩单。 阅读和听有趣的谈话。这个应用程序几乎涵盖了TED.com的TED Talks的所有演讲。“你可以快乐学习”-AppRankStar“最实用的学习英语的方法” - EIOE的研究员■阅读并听完整个成绩单
calculator of formulas with graphing
This app is focused on calculating and graphing mathematical formulas for everyday life and work. What distinguishes it from many other RPN calculators available at the App Store? Some of them allow for formula coding, do graphs, and are free, too. U