单词	Ultrabook
释义	UltrabookUl‧tra‧book /ˈʌltrəbʊk/ noun [countable] trademark a very thin fast light laptop computer
随便看	objectionable objectionably objective objectively objectivity objector object-oriented objet d'art oblation obligate obligation obligatory oblige obliging obligingly oblique obliquely obliterate obliteration oblivion oblivious obliviousness oblong obloquy obnoxious

英语词典包含52748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。