Okay, the user wants me to translate "sun-ray" into Portuguese. Let me think. The direct translation would be "raio de sol". But wait, is there a more common or idiomatic way to say it in Portuguese? Maybe "raio solar" is another term. Let me check.
"Raio de sol" is straightforward, literally "sun ray". "Raio solar" is also correct and might be more commonly used. I should confirm which one is more standard. Looking up some references, both terms are used, but "raio solar" is often used in scientific contexts, while "raio de sol" is more general. Since the user didn't specify context, maybe "raio solar" is safer. But the user might just want a direct translation. Let me check if the user has any previous interactions that might indicate a preference. No, the history only shows the initial rules and the "sun-ray" query.
Also, the user mentioned if the content is already in Portuguese, leave it unchanged. Since "sun-ray" is in English, translation is needed. The user wants only the translation result without explanations. So I should just provide the translated term. Between "raio de sol" and "raio solar", I think "raio de sol" is more literal and might be the expected answer here. But I'm not 100% sure. Maybe I should go with "raio solar" as it's a direct translation of "sun-ray" as a compound noun. Wait, "sun-ray" is a compound, so "raio solar" would be the equivalent in Portuguese. Yeah, that makes sense. So the answer is "raio solar".