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	sacs sad sad excuse for sad sack sad-sack Sadang sadded sadden saddened saddening saddeningly organophosphate organophosphates organophosphorous organophosphorus organophosphoruses organophyly organoplastic organoscopy organosilicon organotherapies organotrophic organotropisms organs organum

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