Okay, the user wants me to translate "dries air" into Simplified Chinese. Let me check the rules again. The first rule says to translate all content into Simplified Chinese. The second rule states that if the content is already in Simplified Chinese, output it unchanged. The third rule is to provide only the translation result with no explanations.
So, "dries air" is in English. I need to translate it. The direct translation would be "干燥空气" in Simplified Chinese. Let me confirm that there's no existing Simplified Chinese content here. Since the original is English, I don't need to leave it as is. Just translate it. Make sure there's no explanation, just the translation. Alright, that should be it.