单词	pentagon
释义	pentagonpentagon /ˈpɛntəˌgɑn/ noun [countable] math, geometry a flat shape with five sides—pentagonal /pɛnˈtægənl/ adjective
随便看	sympathize sympathizer sympathy symphonic symphony symposium symptom symptomatic symptomatically syn- synagogue synapse sync synchronicity synchronization synchronize synchronized swimming synchronous syncline syncopated syncopation syncope syndicate syndicated syndication

英语词典包含48224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。