常见报错翻译

package installation error 

包安装错误

could not add all required packages to the project

无法向项目添加所有必需的包

EntityFramework.5.0.0 : Failed to initialize the PowerShell host.If your PowerShell execution policy setting is set to AllSigned, open the Package Manager Console to initialize the host first.

EntityFramework.5.0.0：初始化PowerShell主机失败。如果PowerShell执行策略设置为AllSigned，请打开包管理器控制台以首先初始化主机。