diff --git a/metagpt/schema.py b/metagpt/schema.py
index 64db39d0d..27f5dd10c 100644
--- a/metagpt/schema.py
+++ b/metagpt/schema.py
@@ -46,21 +46,27 @@ class Message:
 
 @dataclass
 class UserMessage(Message):
-    """便于支持OpenAI的消息"""
+    """便于支持OpenAI的消息
+       Facilitate support for OpenAI messages
+    """
     def __init__(self, content: str):
         super().__init__(content, 'user')
 
 
 @dataclass
 class SystemMessage(Message):
-    """便于支持OpenAI的消息"""
+    """便于支持OpenAI的消息
+       Facilitate support for OpenAI messages
+    """
     def __init__(self, content: str):
         super().__init__(content, 'system')
 
 
 @dataclass
 class AIMessage(Message):
-    """便于支持OpenAI的消息"""
+    """便于支持OpenAI的消息
+       Facilitate support for OpenAI messages
+    """
     def __init__(self, content: str):
         super().__init__(content, 'assistant')