districts of dialect的用法和样例：
例句
- Native dialect is the largest obstacle of Putonghua study for the students in the dialectal areas.
母语方言是方言区学生学习普通话的最大障碍。 - Dialect acquisition includes the mutual acquisition between different dialects and the acquisition of common language in dialect areas.
方言习得包括不同方言区之间的相互习得及方言区习得共同语。
