udacity 上面的flutter课程
https://cn.udacity.com/course/build-native-mobile-apps-with-flutter--ud905
还有其他几个课程也比较有意思
https://cn.udacity.com/course/intro-to-tensorflow-for-deep-learning--ud187
https://cn.udacity.com/course/scalable-microservices-with-kubernetes--ud615
https://cn.udacity.com/course/real-time-analytics-with-apache-storm--ud381