epndb 基本解释 effective perceived noise decibels有效感觉噪声分贝(测量噪声对听力影响的单位) 同首字母单词 ea [,i: 'eɪ] each [iːtʃ] eacm eager ['iːgə] eagerly ['i:gəlɪ] eagerness [ˈiːgənɪs] eagle ['iːg(ə)l] eaglestone ['iːɡlztəʊn] eaglet [ˈiːɡlət] eaglewood ['iːglwʊd] eagre ['iːgə] eai