Okay, the user wants me to translate "nano-robot" into Thai. Let me check the rules again. The first rule says to translate all content into Thai. The second rule mentions if it's already in Thai, leave it as is. The third rule is to provide only the translation without explanations.
So, "nano-robot" is in English. I need to translate it. The correct Thai term for nano-robot is "หุ่นยนต์นาโน" (hun-yont nan-o). I should make sure there's no existing Thai content here. Since the input is English, the output should be the Thai translation. No explanations, just the result. Let me confirm the spelling again to avoid any mistakes. Yep, that's right. So the answer is "หุ่นยนต์นาโน".