单词	aircraft observer
释义	aircraft observer noun : a person holding a rating in the U.S. Air Force for any aircrew position except that of pilot Word History First Known Use 1950, in the meaning defined above
随便看	centralizers centralizes centralizing centrallasite centrallier centralliest centrally centralness centrals centranth centranthi centranthuses centranthusses centrarchid Centrarchidae centrarchidaes centrarchides centrarchids centrarchoid centration Centraxonia centraxonial centre centreboard centreboards

英语词典包含469781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。