region fill区域填充regionn.地区；范围；领域；地带；地域regionan Innovation区域创新region optimization区域优化region of streaking拖尾区域region of suspicion怀疑域region hypogastrica腹下区, 耻区region respiratoria呼吸区regiones subhyoidea[医] 舌骨下区region or city code区域或城市代码region acetabularis髋臼区region clavicularis锁骨区