diff --git a/src/sqlmap-master/plugins/generic/syntax.py b/src/sqlmap-master/plugins/generic/syntax.py
index e5f8325..384f209 100644
--- a/src/sqlmap-master/plugins/generic/syntax.py
+++ b/src/sqlmap-master/plugins/generic/syntax.py
@@ -5,46 +5,71 @@ Copyright (c) 2006-2024 sqlmap developers (https://sqlmap.org/)
 See the file 'LICENSE' for copying permission
 """
 
-import re
+import re  # 导入re模块,用于正则表达式操作
 
-from lib.core.common import Backend
-from lib.core.convert import getBytes
-from lib.core.data import conf
-from lib.core.enums import DBMS
-from lib.core.exception import SqlmapUndefinedMethod
+from lib.core.common import Backend  # 导入Backend类,用于获取后端数据库信息
+from lib.core.convert import getBytes  # 导入getBytes函数,用于将字符串转换为字节
+from lib.core.data import conf  # 导入conf对象,存储全局配置信息
+from lib.core.enums import DBMS  # 导入DBMS枚举类,定义数据库类型
+from lib.core.exception import SqlmapUndefinedMethod  # 导入SqlmapUndefinedMethod异常类,表示未定义的方法
 
 class Syntax(object):
     """
     This class defines generic syntax functionalities for plugins.
+    这个类定义了插件的通用语法功能。
     """
 
     def __init__(self):
-        pass
+        pass  # 初始化方法,此处为空
 
     @staticmethod
     def _escape(expression, quote=True, escaper=None):
-        retVal = expression
+        """
+        Internal method to escape a given expression.
+        内部方法,用于转义给定的表达式。
 
-        if quote:
-            for item in re.findall(r"'[^']*'+", expression):
-                original = item[1:-1]
-                if original:
-                    if Backend.isDbms(DBMS.SQLITE) and "X%s" % item in expression:
-                        continue
-                    if re.search(r"\[(SLEEPTIME|RAND)", original) is None:  # e.g. '[SLEEPTIME]' marker
-                        replacement = escaper(original) if not conf.noEscape else original
+        Args:
+            expression (str): The expression to escape. 要转义的表达式。
+            quote (bool, optional): Whether to handle quoting. 是否处理引号。默认为True
+            escaper (function, optional): The function to use for escaping. 用于转义的函数。默认为None
+        
+        Returns:
+            str: 转义后的表达式
+        """
+        retVal = expression  # 初始化返回值
 
-                        if replacement != original:
-                            retVal = retVal.replace(item, replacement)
+        if quote:  # 如果需要处理引号
+            for item in re.findall(r"'[^']*'+", expression):  # 查找所有单引号包裹的内容
+                original = item[1:-1]  # 获取引号内的原始内容
+                if original:  # 如果原始内容不为空
+                    if Backend.isDbms(DBMS.SQLITE) and "X%s" % item in expression:
+                        continue # 如果是SQLite数据库,且表达式中包含X'...'的格式,则跳过
+                    if re.search(r"$$(SLEEPTIME|RAND)", original) is None:  # 检查原始内容是否包含[SLEEPTIME]或[RAND]标记,例如'[SLEEPTIME]'
+                        replacement = escaper(original) if not conf.noEscape else original  # 如果配置中没有设置noEscape,则使用转义函数进行转义,否则不转义
+                        
+                        if replacement != original:  # 如果转义后的内容与原始内容不同
+                            retVal = retVal.replace(item, replacement)  # 则替换表达式中的原始内容为转义后的内容
                         elif len(original) != len(getBytes(original)) and "n'%s'" % original not in retVal and Backend.getDbms() in (DBMS.MYSQL, DBMS.PGSQL, DBMS.ORACLE, DBMS.MSSQL):
-                            retVal = retVal.replace("'%s'" % original, "n'%s'" % original)
-        else:
-            retVal = escaper(expression)
+                             # 如果原始内容的字节长度与字符串长度不同,且不是n'...'格式,且数据库为MySQL,PostgreSQL,Oracle,MSSQL中的一种
+                            retVal = retVal.replace("'%s'" % original, "n'%s'" % original) # 则将表达式中的原始内容替换为n'...'格式,以支持Unicode字符
+        else:  # 如果不需要处理引号
+            retVal = escaper(expression) # 使用转义函数进行转义
 
-        return retVal
+        return retVal # 返回转义后的表达式
 
     @staticmethod
     def escape(expression, quote=True):
+        """
+        Generic method to escape a given expression.
+        通用方法,用于转义给定的表达式。
+
+        Args:
+            expression (str): The expression to escape. 要转义的表达式。
+            quote (bool, optional): Whether to handle quoting. 是否处理引号。默认为True
+        
+        Raises:
+            SqlmapUndefinedMethod: 如果没有在具体数据库插件中定义escape方法,则抛出此异常
+        """
         errMsg = "'escape' method must be defined "
         errMsg += "inside the specific DBMS plugin"
-        raise SqlmapUndefinedMethod(errMsg)
+        raise SqlmapUndefinedMethod(errMsg)  # 抛出异常,表示未在具体DBMS插件中定义此方法
\ No newline at end of file