相關(guān)單詞近義詞 period 一段時(shí)間, Old-Fashioned 老式的, dated 過(guò)時(shí)的, historical 與歷史有關(guān)的..., ex post facto 事後地, retroactive 有追溯力的臨近詞retroactive, retrieve, Retrou, retron, Retrone, Retrosi, retrovit, retrofit, retrorse, retrogen, retroact, retroene 返回 retros