单词	acid-free
释义	acid-freeˈacid-free adjective acid-free paper and paper products do not contain acid:  Store precious photographs and documents between sheets of acid-free paper.
随便看	side street sideswipe sidetrack side-view mirror sidewalk sideways side-wheeler siding sidle SIDS siege Siegel, Bugsy Siege of Sidney Street Siegfried Line sienna sierra Sierra Club Sierra Leone Sierra Leonean Sierra Madre Sierra Nevada siesta sieve sift sifter

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。