Pam.pasNONE(无词性)A vast plain of south-central South America. The Pampas extend for about ,'0 km (,000 mi) from the lower Paraná River to south-central Argentina.潘帕斯草原:南美洲中南部的大平原。潘帕斯草原从较低的巴拉那河到阿根廷中南部延伸大约,'0公里(,000英里)