单词	attosecond
释义	attosecondat‧to‧sec‧ond /ˈætəʊˌsekənd $ -toʊ-/ noun [countable] technical a unit of time that is equal to 10 to the power of minus 18
随便看	roughcast rough diamond roughen rough-hewn roughhouse roughly roughneck roughness rough paper Rough Riders roughshod roulette round roundabout rounded roundel rounders round-eyed Roundhead roundly roundness round robin round-shouldered Round Table round-table

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。