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Phrase(s): Let’s not go through all that again.
We are not going to discuss that matter again. (Compare this with Do we have to go through all that again?) • Bill: Now, I still want to explain again about last night. Sally: Let’s not go through all that again! • Sally: I can’t get over the way you spoke to me at our own dinner table. Fred: I was only kidding! I said I was sorry. Let’s not go through all that again!
McGrawhill's American Idioms And Phrasal Verbs