diff --git a/app/api/search.py b/app/api/search.py
index 26c308b..6f76ead 100644
--- a/app/api/search.py
+++ b/app/api/search.py
@@ -18,6 +18,13 @@ dict_search = APIRouter()
 
 @dict_search.post("/search", response_model=SearchResponse)
 async def search(request: Request, body: SearchRequest, user=Depends(get_current_user)):
+    """
+    精确搜索
+    :param request:
+    :param body: 单词是依据list返回清单中的内容动态更新对数据库text字段进行精确匹配的
+    :param user:
+    :return:
+    """
     query = body.query
     if body.language == 'fr':
         query = normalize_text(query)
diff --git a/app/schemas/search_schemas.py b/app/schemas/search_schemas.py
index 889a5de..a4df09f 100644
--- a/app/schemas/search_schemas.py
+++ b/app/schemas/search_schemas.py
@@ -1,4 +1,4 @@
-from typing import Literal, List, Union
+from typing import Literal, List, Union, Optional
 
 from pydantic import BaseModel
 
@@ -22,7 +22,7 @@ class SearchItemFr(BaseModel):
     pos: PosEnumFr
     chi_exp: str
     eng_explanation: str
-    example: str
+    example: Optional[str]
 
 
 class SearchResponse(BaseModel):
diff --git a/main.py b/main.py
index 06dd92b..03aed37 100644
--- a/main.py
+++ b/main.py
@@ -45,7 +45,7 @@ app.add_middleware(
 
 register_tortoise(
     app=app,
-    config=ONLINE_SETTINGS,
+    config=TORTOISE_ORM,
 )
 
 app.include_router(users_router, tags=["User API"], prefix="/users")