Vocabulix: Free vocab building lessons in Spanish, German and English, as well as other languages, with a baked in social network.
Vocabulix：免费西班牙语、德语、英语及其他语言的课程，兼具社会化网络功能。
Every day I learned something new. In Frankfurt I took daily German lessons before work.
每一天我都学到一些新的知识——在法兰克福，我在每天上班前都要去上德语课；
应用推荐