You can't imagine how dirty I am.
You can hardly imagine,how dirty I am.
你的肮脏指什么??(¬∀¬)σ
“You'll never know , what I have done.”
亦或者
"You'll never imagine, my hands covered by blood"
再或者
"You'll never understand, I came from dirt world"
这都是引申翻译,表达的意思是一样哒~~