a local specialty的用法和样例：
- Walnut is a local specialty here.
- It's a local specialty, very popular here.
- Yuanping maye (fried dough twist) is a local specialty.
- Chongqing local people consider the hot pot a local specialty, which is noted for its peppery and hot taste, scalding yet fresh and tender.
- And when we tasted a local specialty, we could further understand why it was famous and appreciate its special local flavor.