项目尚未建立合适模型。的翻译：Project has not yet established appropriate models 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Appropriate model for the project has not been established

Project has not yet established appropriate models

The project not yet establishes the appropriate model

Project had yet to establish suitable models

Project has not yet established appropriate models