Let's break it down:
* si: If
* unus: One
* crudus: Raw, uncooked
* nos: We
* totus: All, whole
The phrase could potentially be trying to convey something like "If one is raw, we are all raw" but the syntax and meaning are unclear. It's possible there's a typo or misunderstanding in the phrase.
If you could provide more context or what you were trying to express, I might be able to help you find a more accurate and grammatically correct Latin phrase.