我在这次回来之前可以拿到证明材料的翻译：I can get proof before coming back this material 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

正在翻译，请等待...

I can get proof before coming back this material

Before I in this time come back may attain the proof material

I am in the back before you can get the proof materials

I can get proof before coming back this material