https://mirrors.neusoft.edu.cn/android
https://mirrors.neusoft.edu.cn/android/repository/
Android Studio
https://developer.android.google.cn/studio/install#mac
https://developer.android.google.cn/studio
3.3.2.0 & android-studio-ide-182.5314842-mac.dmg
https://developer.android.google.cn/training/basics/firstapp/index.html
https://cn.udacity.com/course/new-android-fundamentals--ud851
https://classroom.udacity.com/courses/ud851
proxy bug
https://developer.android.com/r/studio-help/3.3/?http.proxy
https://developer.android.google.cn/r/studio-help/3.3/?http.proxy
http-proxy
https://www.jetbrains.com/help/idea/2018.2/meet-intellij-idea.html
https://www.jetbrains.com/help/idea/2018.2/settings-http-proxy.html
solution
just skip proxy, open project