World English
English on the internet. The best online resource for English as a second or foreign language (ESL / EFL), English exercises and activities, online English lessons with native speakers of English.
- 2017-09-11 - 收藏
CS2N官网
计算机科学研究网络 (The Computer Science Student Network 简称CS2N)是由美国卡内基大学和美国国防部高级研究计划局(Darpa)联合创办，旨在增加修读计算机科学、科学技术、工程学和数学的学生们合作研究项目学位。CS2N is your home for robotics education, computer science activities, robotics curriculum, computer science competitions, and animation competitions all related to STEM education.
- 2015-11-24 - 收藏
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