diff --git a/GFramework.Core/Functional/ResultExtensions.cs b/GFramework.Core/Functional/ResultExtensions.cs
index 6be7870d..3d9d7d2d 100644
--- a/GFramework.Core/Functional/ResultExtensions.cs
+++ b/GFramework.Core/Functional/ResultExtensions.cs
@@ -177,7 +177,7 @@ public static class ResultExtensions
         return result.Match(
             succ: value => predicate(value)
                 ? result
-                : Result<T>.Fail(new ArgumentException(errorMessage, nameof(errorMessage))),
+                : Result<T>.Fail(new ArgumentException(errorMessage)),
             fail: _ => result
         );
     }
diff --git a/GFramework.Core/Ioc/MicrosoftDiContainer.cs b/GFramework.Core/Ioc/MicrosoftDiContainer.cs
index 4dd7034b..9192e289 100644
--- a/GFramework.Core/Ioc/MicrosoftDiContainer.cs
+++ b/GFramework.Core/Ioc/MicrosoftDiContainer.cs
@@ -394,7 +394,7 @@ public class MicrosoftDiContainer(IServiceCollection? serviceCollection = null)
         {
             if (assembly is null)
             {
-                throw new ArgumentException("Assemblies collection cannot contain null items.", nameof(assemblies));
+                throw new ArgumentNullException(nameof(assemblies), "Assemblies collection cannot contain null items.");
             }
         }
 
diff --git a/GFramework.Core/Localization/LocalizationString.cs b/GFramework.Core/Localization/LocalizationString.cs
index c925cf9f..c926d73b 100644
--- a/GFramework.Core/Localization/LocalizationString.cs
+++ b/GFramework.Core/Localization/LocalizationString.cs
@@ -8,11 +8,26 @@ namespace GFramework.Core.Localization;
 /// </summary>
 public class LocalizationString : ILocalizationString
 {
+    /// <summary>
+    /// 正则分组名：变量名。
+    /// </summary>
+    private const string VariableGroupName = "variable";
+
+    /// <summary>
+    /// 正则分组名：格式化器名。
+    /// </summary>
+    private const string FormatterGroupName = "formatter";
+
+    /// <summary>
+    /// 正则分组名：格式化器参数。
+    /// </summary>
+    private const string FormatterArgsGroupName = "args";
+
     /// <summary>
     /// 匹配 {variableName} 或 {variableName:formatter:args} 的正则表达式模式
     /// </summary>
     private const string FormatVariablePattern =
-        @"\{([a-zA-Z_][a-zA-Z0-9_]*)(?::([a-zA-Z_][a-zA-Z0-9_]*)(?::([^}]+))?)?\}";
+        @"\{(?<variable>[a-zA-Z_][a-zA-Z0-9_]*)(?::(?<formatter>[a-zA-Z_][a-zA-Z0-9_]*)(?::(?<args>[^}]+))?)?\}";
 
     /// <summary>
     /// 预编译的静态正则表达式，用于格式化字符串中的变量替换
@@ -157,13 +172,13 @@ public class LocalizationString : ILocalizationString
         Dictionary<string, object> variables,
         ILocalizationManager manager)
     {
-        var variableName = match.Groups[1].Value;
+        var variableName = match.Groups[VariableGroupName].Value;
         if (!variables.TryGetValue(variableName, out var value))
         {
             return match.Value;
         }
 
-        var formatterName = GetOptionalGroupValue(match, 2);
+        var formatterName = GetOptionalGroupValue(match, FormatterGroupName);
         if (string.IsNullOrEmpty(formatterName))
         {
             return FormatValue(value, manager);
@@ -190,7 +205,7 @@ public class LocalizationString : ILocalizationString
         ILocalizationManager manager,
         out string result)
     {
-        var formatterArgs = GetOptionalGroupValue(match, 3) ?? string.Empty;
+        var formatterArgs = GetOptionalGroupValue(match, FormatterArgsGroupName) ?? string.Empty;
         if (GetFormatter(manager, formatterName) is { } formatter &&
             formatter.TryFormat(formatterArgs, value, manager.CurrentCulture, out result))
         {
@@ -220,11 +235,11 @@ public class LocalizationString : ILocalizationString
     /// 获取正则表达式匹配组中的可选值
     /// </summary>
     /// <param name="match">正则表达式匹配结果</param>
-    /// <param name="groupIndex">要获取的组索引</param>
+    /// <param name="groupName">要获取的命名组</param>
     /// <returns>如果该组匹配成功则返回其值；否则返回 null</returns>
-    private static string? GetOptionalGroupValue(Match match, int groupIndex)
+    private static string? GetOptionalGroupValue(Match match, string groupName)
     {
-        return match.Groups[groupIndex].Success ? match.Groups[groupIndex].Value : null;
+        return match.Groups[groupName].Success ? match.Groups[groupName].Value : null;
     }
 
     /// <summary>