Okay, the user wants me to translate "iteration tool" into Traditional Chinese. Let me check the rules again. The first rule says to translate all content into Traditional Chinese. The second rule states that if the content is already in Traditional Chinese, leave it as is. The third rule is to provide only the translation without any explanations.
So, "iteration tool" is in English. I need to translate it. The term "iteration" can be translated as "迭代" and "tool" as "工具". So combining them, it should be "迭代工具". I should make sure there's no existing Traditional Chinese version here. Since the original is in English, I proceed with the translation. No need for explanations, just the result. Let me confirm once more. Yes, "迭代工具" is the correct translation. Alright, that's the answer.