Okay, the user wants me to translate "bone structure" 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, "bone structure" in English needs to be translated. The correct Traditional Chinese term for "bone structure" is "骨骼結構". I should make sure there's no simplification here. Since the original is in English, not Traditional Chinese, I need to translate it. No explanations, just the translation. Let me confirm that "骨骼結構" is the right term. Yes, that's correct. So the response should be "骨骼結構".