Traducció - Japonès-Anglès - iranai nanimo iranai!

Notes:
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The first line literally means:
"I don't need! I don't need anything!"
But we can't just say "I don't need" in English, so the object pronoun "it" is added for grammatical reasons, in the absence of any context.
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Without context, the meaning of the second line is as above.
In certain contexts, it may mean:
Why have I become pregnant with this man's child?
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The usual syntactic order in Japanese for the last line is:
Kamisama, doushite?
not the syntactic order given in the request.
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Punctuation and capitalization added to conform to English grammar and style.