export FLUTTER_STORAGE_BASE_URL="https://mirrors.tuna.tsinghua.edu.cn/flutter"
export PUB_HOSTED_URL="https://mirrors.tuna.tsinghua.edu.cn/dart-pub"

export FLUTTER_STORAGE_BASE_URL="https://storage.flutter-io.cn/"
export PUB_HOSTED_URL="https://pub.flutter-io.cn/"

PUB_CACHE=本地PUB缓存目录