diff --git a/STranslate/Images/copy2.png b/STranslate/Images/copy2.png
new file mode 100644
index 0000000..86784f5
Binary files /dev/null and b/STranslate/Images/copy2.png differ
diff --git a/STranslate/MainWindow.xaml b/STranslate/MainWindow.xaml
index a3a4b38..2b9254a 100644
--- a/STranslate/MainWindow.xaml
+++ b/STranslate/MainWindow.xaml
@@ -16,7 +16,7 @@
         Topmost="True"
         Deactivated="Window_Deactivated"
         WindowStyle="None"
-        Height="450"
+        SizeToContent="Height"
         Width="400"
         Icon="/Images/translate.ico">
     <Window.DataContext>
@@ -84,22 +84,38 @@
                         BorderThickness="1"
                         CornerRadius="4"
                         Margin="5">
-                    <TextBox x:Name="TextBoxInput"
-                             Background="Transparent"
-                             BorderBrush="{x:Null}"
-                             Margin="5"
-                             BorderThickness="0"
-                             FontSize="18"
-                             TextWrapping="Wrap"
-                             AcceptsReturn="True"
-                             VerticalContentAlignment="Top"
-                             HorizontalScrollBarVisibility="Disabled"
-                             VerticalScrollBarVisibility="Auto"
-                             Text="{Binding InputTxt,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}">
-                        <TextBox.InputBindings>
-                            <KeyBinding Command="{Binding TranslateCmd}" Key="Enter" />
-                        </TextBox.InputBindings>
-                    </TextBox>
+                    <Grid>
+                        <TextBox x:Name="TextBoxInput"
+                                 Background="Transparent"
+                                 BorderBrush="{x:Null}"
+                                 Margin="5,5,5,35"
+                                 BorderThickness="0"
+                                 FontSize="16"
+                                 MinHeight="80"
+                                 MaxHeight="200"
+                                 TextWrapping="Wrap"
+                                 AcceptsReturn="True"
+                                 VerticalContentAlignment="Top"
+                                 HorizontalScrollBarVisibility="Disabled"
+                                 VerticalScrollBarVisibility="Auto"
+                                 Text="{Binding InputTxt,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}">
+                            <TextBox.InputBindings>
+                                <KeyBinding Command="{Binding TranslateCmd}" Key="Enter" />
+                            </TextBox.InputBindings>
+                        </TextBox>
+                        <Button Cursor="Hand"
+                                Margin="5,0,0,5"
+                                HorizontalAlignment="Left"
+                                VerticalAlignment="Bottom"
+                                Command="{Binding CopyInputCmd}">
+                                <Image Source="/Images/copy2.png"/>
+                            <hc:FloatingBlock.ContentTemplate>
+                                <DataTemplate>
+                                    <TextBlock Text="已复制" />
+                                </DataTemplate>
+                            </hc:FloatingBlock.ContentTemplate>
+                        </Button>
+                    </Grid>
                 </Border>
             </Grid>
             
@@ -116,8 +132,8 @@
                           Style="{StaticResource ComboBox.Small}"
                           ItemsSource="{Binding InputCombo}"
                           SelectedItem="{Binding InputComboSelected}" />
+                <Separator Margin="20,0"/>
                 <Label Content="目标语言:"
-                       Margin="10,0"
                        Background="Transparent"
                        BorderThickness="0" />
                 <ComboBox x:Name="OutCombo"
@@ -125,7 +141,7 @@
                           Style="{StaticResource ComboBox.Small}"
                           ItemsSource="{Binding OutputCombo}"
                           SelectedItem="{Binding OutputComboSelected}" />
-                <Button Margin="10,0,0,0"
+                <!--<Button Margin="10,0,0,0"
                         Cursor="Hand"
                         Command="{Binding CopyResultCmd}">
                     <Image Source="/Images/copy.png" />
@@ -134,7 +150,7 @@
                             <TextBlock Text="已复制" />
                         </DataTemplate>
                     </hc:FloatingBlock.ContentTemplate>
-                </Button>
+                </Button>-->
             </StackPanel>
             
             <!--output-->
@@ -149,19 +165,65 @@
                         CornerRadius="4"
                         Margin="5"
                         Height="{Binding ElementName=Output, Path=Height}">
-                    <hc:TextBox x:Name="TextBoxOutput"
-                                hc:InfoElement.Placeholder="翻译"
-                                Background="Transparent"
-                                BorderBrush="{x:Null}"
-                                BorderThickness="0"
-                                IsReadOnly="True"
-                                Margin="5"
-                                FontSize="18"
-                                TextWrapping="Wrap"
-                                VerticalContentAlignment="Top"
-                                HorizontalScrollBarVisibility="Disabled"
-                                VerticalScrollBarVisibility="Auto"
-                                Text="{Binding OutputTxt}"/>
+                    <Grid>
+                        <hc:TextBox x:Name="TextBoxOutput"
+                                    hc:InfoElement.Placeholder="翻译结果"
+                                    Background="Transparent"
+                                    BorderBrush="{x:Null}"
+                                    BorderThickness="0"
+                                    IsReadOnly="True"
+                                    Margin="5,5,5,35"
+                                    MaxHeight="400"
+                                    FontSize="16"
+                                    TextWrapping="Wrap"
+                                    VerticalContentAlignment="Top"
+                                    HorizontalScrollBarVisibility="Disabled"
+                                    VerticalScrollBarVisibility="Auto"
+                                    Text="{Binding OutputTxt}"/>
+                        <StackPanel Orientation="Horizontal"
+                                    Margin="5,0,0,5">
+                            <!--普通复制-->
+                            <Button Cursor="Hand"
+                                    HorizontalAlignment="Left"
+                                    VerticalAlignment="Bottom"
+                                    ToolTip="普通"
+                                    Command="{Binding CopyResultCmd}">
+                                <Image Source="/Images/copy2.png"/>
+                                <hc:FloatingBlock.ContentTemplate>
+                                    <DataTemplate>
+                                        <TextBlock Text="已复制" />
+                                    </DataTemplate>
+                                </hc:FloatingBlock.ContentTemplate>
+                            </Button>
+                            <!--蛇形复制-->
+                            <Button Cursor="Hand"
+                                    Margin="5,0,5,0"
+                                    HorizontalAlignment="Left"
+                                    VerticalAlignment="Bottom"
+                                    ToolTip="蛇形"
+                                    Command="{Binding CopySnakeResultCmd}">
+                                <Image Source="/Images/copy2.png"/>
+                                <hc:FloatingBlock.ContentTemplate>
+                                    <DataTemplate>
+                                        <TextBlock Text="已复制" />
+                                    </DataTemplate>
+                                </hc:FloatingBlock.ContentTemplate>
+                            </Button>
+                            <!--驼峰复制-->
+                            <Button Cursor="Hand"
+                                    HorizontalAlignment="Left"
+                                    VerticalAlignment="Bottom"
+                                    ToolTip="驼峰"
+                                    Command="{Binding CopyHumpResultCmd}">
+                                <Image Source="/Images/copy2.png"/>
+                                <hc:FloatingBlock.ContentTemplate>
+                                    <DataTemplate>
+                                        <TextBlock Text="已复制" />
+                                    </DataTemplate>
+                                </hc:FloatingBlock.ContentTemplate>
+                            </Button>
+                        </StackPanel>
+                    </Grid>
                 </Border>
             </Grid>
         </Grid>
diff --git a/STranslate/Properties/Resources.Designer.cs b/STranslate/Properties/Resources.Designer.cs
index 762f481..984f0aa 100644
--- a/STranslate/Properties/Resources.Designer.cs
+++ b/STranslate/Properties/Resources.Designer.cs
@@ -70,6 +70,16 @@ namespace STranslate.Properties {
             }
         }
         
+        /// <summary>
+        ///   查找 System.Drawing.Bitmap 类型的本地化资源。
+        /// </summary>
+        internal static System.Drawing.Bitmap copy2 {
+            get {
+                object obj = ResourceManager.GetObject("copy2", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
         /// <summary>
         ///   查找类似于 (图标) 的 System.Drawing.Icon 类型的本地化资源。
         /// </summary>
diff --git a/STranslate/Properties/Resources.resx b/STranslate/Properties/Resources.resx
index dd567ba..3ae3893 100644
--- a/STranslate/Properties/Resources.resx
+++ b/STranslate/Properties/Resources.resx
@@ -121,6 +121,9 @@
   <data name="copy" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>..\images\copy.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
   </data>
+  <data name="copy2" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\images\copy2.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
   <data name="crossword" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>..\images\crossword.ico;System.Drawing.Icon, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
   </data>
diff --git a/STranslate/STranslate.csproj b/STranslate/STranslate.csproj
index e922bd1..731d359 100644
--- a/STranslate/STranslate.csproj
+++ b/STranslate/STranslate.csproj
@@ -157,6 +157,9 @@
     <Resource Include="Images\translate.ico">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </Resource>
+    <Resource Include="Images\copy2.png">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </Resource>
     <Content Include="STranslate.yml">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </Content>
diff --git a/STranslate/ViewModel/MainVM.cs b/STranslate/ViewModel/MainVM.cs
index 8b24eac..a21bdd7 100644
--- a/STranslate/ViewModel/MainVM.cs
+++ b/STranslate/ViewModel/MainVM.cs
@@ -26,6 +26,14 @@ namespace STranslate.ViewModel
             //TODO: fix no config
             config = ConfigUtil.ReadConfig(ConfigPath);
 
+            //复制输入
+            CopyInputCmd = new RelayCommand((_) =>
+            {
+                return string.IsNullOrEmpty(InputTxt) ? false : true;
+            }, (_) =>
+            {
+                Clipboard.SetText(InputTxt);
+            });
             //复制翻译结果
             CopyResultCmd = new RelayCommand((_) =>
             {
@@ -82,15 +90,12 @@ namespace STranslate.ViewModel
                 }
                 OutputTxt = translateResp;
 
-                var splitList = translateResp.Split(' ').ToList();
+                var splitList = OutputTxt.Split(' ').ToList();
                 if (splitList.Count > 1)
                 {
-                    SnakeRet = GenSnakeString(splitList);
-                    HumpRet = GenHumpString(splitList);
+                    //SnakeRet = GenSnakeString(splitList);
+                    //HumpRet = GenHumpString(splitList);
                 }
-
-                System.Diagnostics.Debug.Print(SnakeRet);
-                System.Diagnostics.Debug.Print(HumpRet);
             }
             catch (Exception ex)
             {
@@ -104,7 +109,7 @@ namespace STranslate.ViewModel
         /// <returns></returns>
         private string GenSnakeString(List<string> req)
         {
-            //Alarm statistics
+            //TODO: 构造时间过长
             var ret = string.Empty;
             
             req.ForEach(x =>
@@ -121,6 +126,7 @@ namespace STranslate.ViewModel
         private string GenHumpString(List<string> req)
         {
             //TODO: I'm your father 出错情况
+            //TODO: 构造出错
             var ret = string.Empty;
             var arr = req.ToArray();
             ret += arr[0].Substring(0, 1).ToLower() + arr[0].Substring(1);
@@ -136,12 +142,15 @@ namespace STranslate.ViewModel
         #region Params
 
         public ICommand TranslateCmd { get; private set; }
+        public ICommand CopyInputCmd { get; private set; }
         public ICommand CopyResultCmd { get; private set; }
         public ICommand CopySnakeResultCmd { get; private set; }
         public ICommand CopyHumpResultCmd { get; private set; }
 
-        public string SnakeRet { get; set; }
-        public string HumpRet { get; set; }
+        private string _SnakeRet;
+        public string SnakeRet { get => _SnakeRet; set => UpdateProperty(ref _SnakeRet, value); }
+        private string _HumpRet;
+        public string HumpRet { get => _HumpRet; set => UpdateProperty(ref _HumpRet, value); }
 
         private string _InputTxt;
         public string InputTxt { get => _InputTxt; set => UpdateProperty(ref _InputTxt, value); }