regional的解释
a. 地区的,局部的
regional的例句
A regional dialect or language that becomes the standard language over a wider area, losing its most extreme local features.
共通语一种地区方言或语言，它成为广大地区的通用语言而失去了最显著的地方特征

Close analysis of sales figures showed clear regional variations.
对销售额的仔细分析显示出明显的地区差别。