region fill区域填充regionn.地区；范围；领域；地带；地域region of quantifier量词作用区域regiones colli media[医] 颈中区region and gradation分区分层region of acceptance接收区region manufacturing区域制造业region volaris manus手掌区Region labeling rule区域标注法region of literature文学领域regiones vertebralis[医] 脊椎区region of elongation延长区