Okay, the user sent "re-using". Let me check the translation rules again. The first rule says to translate all content into Japanese. The second rule states that if the content is already in Japanese, output it unchanged. The third rule is to provide only the translation result without explanations.
So, "re-using" is an English word. I need to translate it into Japanese. The direct translation would be "再利用" (sairyou). But maybe there's a more natural way to express it. Let me think. "Re-using" can also be translated as "再利用する" if it's a verb, but since the original is a gerund, maybe "再利用" is sufficient. However, in Japanese, sometimes the verb form is used even when it's a noun. Wait, the user might be looking for the noun form. Let me confirm. "Re-using" as a noun would be "再利用" in Japanese. Alternatively, "再利用行為" could be more precise, but that's probably too literal. The most common translation would be "再利用".
Also, the user mentioned that if the content is already in Japanese, leave it as is. Since "re-using" is English, I need to translate it. The third rule says to provide only the translation, no explanations. So I should just output "再利用" without any extra text. Let me make sure there's no other possible translation. Maybe "リユース" is a loanword, but that's more like "reuse" as a term. However, in formal contexts, "再利用" is more standard. Alright, I'll go with "再利用".
再利用