1、先到 https://docs.microsoft.com/en-us/visualstudio/install/use-command-line-parameters-to-install-visual-studio?view=vs-2019
下载离线安装包到d:\Software\vs2019
2、D:\software\Vs2019\vs_enterprise__1250430207.1557479870.exe --layout D:\software\Vs2019\Cache --all --includeRecommended --includeOptional --lang zh-CN