You must specify a unique project key, at least 2 characters long, containing only uppercase letters.的翻译：You must specify a unique project key, at least 2 characters long, containing only uppercase letters. 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

You must specify a unique project key, at least 2 characters long, containing only uppercase letters.

You must specify a unique key project, at least 2 characters long, containing only uppercase letters.

You must specify a unique project key, at least 2 characters long, containing only uppercase letters.