单词	Ultrabook
释义	UltrabookUl‧tra‧book /ˈʌltrəbʊk/ noun [countable] trademark a very thin fast light laptop computer
随便看	raspberry Rasputin, Grigori Rasta Rastafarian Rastafarianism Rastaman rat rat-arsed rat-a-tat ratbag ratchet rate rate of exchange rate of return ratepayer rather Rather, Dan ratification ratify rating ratio ration rational rationale rationalism

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。