This article introduces briefly the anthrop geographical situation in nan'ao island , and makes a comparison of the phonetic systems in houzhai town and yun'ao town and draws out the differences between them as well as the main causes behind them .

本文简要地介绍南澳岛的人文地理概况，描写了南澳岛后宅镇和云澳镇的语音系统，比较分析了它们之间的同异，并指出其差异的主要形成原因。