Okay, the user wants me to translate "non-radiant" 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 explanations.
So, "non-radiant" is an English adjective. I need to find the correct Traditional Chinese equivalent. The direct translation of "non-radiant" could be "不發光的" or "不發光". However, I should consider if there's a more common or natural term used in Traditional Chinese contexts. "不發光" is straightforward, meaning "not emitting light." Alternatively, "無光" might be another option, but it's more like "without light."
Wait, maybe "non-radiant" in this context refers to something that doesn't emit light or is not shining. So "不發光" is accurate. Let me confirm if there's a standard translation for this term. Since the user didn't provide any specific context, I should stick with the direct translation. Also, since the user wants only the translation without explanations, I need to make sure I don't add any extra text.
So the final answer should be "不發光" or "不發光的" depending on the part of speech. Since "non-radiant" is an adjective, "不發光的" might be more appropriate. But in Chinese, adjectives can be used without the "的" particle in certain contexts. However, without more context, it's safer to use the direct translation. I'll go with "不發光" as the translation.