decareWiktionary 原文构词拆分dec-前缀Alternative form of deca- (“ten”) used before a vowel.+are词根/词干词源说明From dec- + are.释义（英文）名词 NounA unit of surface area equal to 10 ares (that is, 1,000 square metres, 0.10 hectares, or approximately 0.25 acres)