当地语的英文怎么说

当地语的英文：
vernacularism

The common speech of a people;the vernacular.
本国语，不规范语一个民族普通的语言；地方话

The vernacular is used by the proletariat and also by the bourgeoisie
无产阶级讲白话，资产阶级也讲白话。

To use the vernacular of the period, Peter was square.
用那时的土话讲，彼得是个老古板。

The vernaculars of these African tribes have never been written down.
这些非洲部落的土话没能被记载下来。

Paraphrase the ancient Chinese prose in vernacular language.
把这篇古文译成白话文。