districts of dialect的用法和樣例：
例句
- Native dialect is the largest obstacle of Putonghua study for the students in the dialectal areas.
母語方言是方言區學生學習普通話的最大障礙。 - Dialect acquisition includes the mutual acquisition between different dialects and the acquisition of common language in dialect areas.
方言習得包括不同方言區之間的相互習得及方言區習得共同語。
