a vernacular language的用法和样例：
- An Iranian language that is the principal vernacular language of Afghanistan and parts of western Pakistan.
- Paraphrase the ancient Chinese prose in vernacular language.
- He was passionate, throughout his life, about the need to create a vernacular written language that would throw off the shackles of Latin.
- Leap hardships, not for anything else, only you do not return to a vernacular.