单词	periodoscope
释义	periodoscope noun pe·​ri·​od·​o·​scope ˌpirēˈädəˌskōp : a table or dial for calculating the probable date of parturition Word History Etymology period entry 1 + -o- + -scope
随便看	billbergia billboard billboarded billboarding billboards billbooks billbroking billbug billbugs billed biller drywall drywalled drywalling drywalls drywells drôlerie ds DSc dses dsgn DSL DSLR DSM DSO

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。