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单词	upside down
释义	adverb | adjective upside downˌupside ˈdown1 ●●○ adverb Etymology ETYMOLOGYupside down1 Origin: 1400-1500 up so down up as if down (14-16 centuries) with the top at the bottom and the bottom at the top OPP right side up:  You’re holding the book upside down. → see also turn something upside down at turn1 (17) adverb | adjective upside downupside down2 adjective 1in a position with the top at the bottom and the bottom at the top:  an upside down U shape2messy or not organized
随便看	N/A NAACP nab nabob Nabokov, Vladimir nacho nacho cheese Nader, Ralph nadir NAFTA nag nagging Nahum naiad naif nail nail-biter nail-biting nailbrush nail clippers nail file nail polish nail scissors Nairobi Naismith, James

英语词典包含48224条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。