diff --git a/app/src/main/java/net/micode/notes/data/Notes.java b/app/src/main/java/net/micode/notes/data/Notes.java
index a1d7014..ffe9694 100644
--- a/app/src/main/java/net/micode/notes/data/Notes.java
+++ b/app/src/main/java/net/micode/notes/data/Notes.java
@@ -81,141 +81,141 @@ public class Notes {
         public static final String CREATED_DATE = "created_date";
 
         /**
-         * Latest modified date
-         * <P> Type: INTEGER (long) </P>
+         * 最后修改日期
+         * <P> 类型：INTEGER (long) </P>
          */
         public static final String MODIFIED_DATE = "modified_date";
 
 
+        
         /**
-         * Alert date
-         * <P> Type: INTEGER (long) </P>
+         * 提醒日期
+         * <P> 类型：INTEGER (long) </P>
          */
         public static final String ALERTED_DATE = "alert_date";
 
-        /**
-         * Folder's name or text content of note
-         * <P> Type: TEXT </P>
+         /**
+         * 文件夹的名称或笔记的文本内容
+         * <P> 类型：TEXT </P>
          */
         public static final String SNIPPET = "snippet";
 
         /**
-         * Note's widget id
-         * <P> Type: INTEGER (long) </P>
+         * 笔记的小部件ID
+         * <P> 类型：INTEGER (long) </P>
          */
         public static final String WIDGET_ID = "widget_id";
 
-        /**
-         * Note's widget type
-         * <P> Type: INTEGER (long) </P>
+       /**
+         * 笔记的小部件类型
+         * <P> 类型：INTEGER (long) </P>
          */
         public static final String WIDGET_TYPE = "widget_type";
 
         /**
-         * Note's background color's id
-         * <P> Type: INTEGER (long) </P>
+         * 笔记的背景颜色ID
+         * <P> 类型：INTEGER (long) </P>
          */
         public static final String BG_COLOR_ID = "bg_color_id";
 
-        /**
-         * For text note, it doesn't has attachment, for multi-media
-         * note, it has at least one attachment
-         * <P> Type: INTEGER </P>
+       /**
+         * 对于文本笔记，不包含附件；对于多媒体笔记，至少有一个附件
+         * <P> 类型：INTEGER </P>
          */
         public static final String HAS_ATTACHMENT = "has_attachment";
 
+       
         /**
-         * Folder's count of notes
-         * <P> Type: INTEGER (long) </P>
+         * 文件夹中的笔记数量
+         * <P> 类型：INTEGER (long) </P>
          */
         public static final String NOTES_COUNT = "notes_count";
 
-        /**
-         * The file type: folder or note
-         * <P> Type: INTEGER </P>
+         /**
+         * 文件类型：文件夹或笔记
+         * <P> 类型：INTEGER </P>
          */
         public static final String TYPE = "type";
 
         /**
-         * The last sync id
-         * <P> Type: INTEGER (long) </P>
+         * 最后同步ID
+         * <P> 类型：INTEGER (long) </P>
          */
         public static final String SYNC_ID = "sync_id";
 
         /**
-         * Sign to indicate local modified or not
-         * <P> Type: INTEGER </P>
+         * 标识是否本地修改
+         * <P> 类型：INTEGER </P>
          */
         public static final String LOCAL_MODIFIED = "local_modified";
 
         /**
-         * Original parent id before moving into temporary folder
-         * <P> Type : INTEGER </P>
+         * 移动到临时文件夹之前的原始父ID
+         * <P> 类型：INTEGER </P>
          */
         public static final String ORIGIN_PARENT_ID = "origin_parent_id";
 
         /**
-         * The gtask id
-         * <P> Type : TEXT </P>
+         * GTask的ID
+         * <P> 类型：TEXT </P>
          */
         public static final String GTASK_ID = "gtask_id";
 
-        /**
-         * The version code
-         * <P> Type : INTEGER (long) </P>
+         /**
+         * 版本号
+         * <P> 类型：INTEGER (long) </P>
          */
         public static final String VERSION = "version";
     }
 
     public interface DataColumns {
         /**
-         * The unique ID for a row
-         * <P> Type: INTEGER (long) </P>
+         * 行的唯一ID
+         * <P> 类型：INTEGER (long) </P>
          */
         public static final String ID = "_id";
 
         /**
-         * The MIME type of the item represented by this row.
-         * <P> Type: Text </P>
+         * 此行所代表的项的MIME类型
+         * <P> 类型：Text </P>
          */
         public static final String MIME_TYPE = "mime_type";
 
         /**
-         * The reference id to note that this data belongs to
-         * <P> Type: INTEGER (long) </P>
+         * 此数据所属的笔记的引用ID
+         * <P> 类型：INTEGER (long) </P>
          */
         public static final String NOTE_ID = "note_id";
 
-        /**
-         * Created data for note or folder
-         * <P> Type: INTEGER (long) </P>
+         /**
+         * 创建日期
+         * <P> 类型：INTEGER (long) </P>
          */
         public static final String CREATED_DATE = "created_date";
 
         /**
-         * Latest modified date
-         * <P> Type: INTEGER (long) </P>
+         * 最后修改日期
+         * <P> 类型：INTEGER (long) </P>
          */
         public static final String MODIFIED_DATE = "modified_date";
 
         /**
-         * Data's content
-         * <P> Type: TEXT </P>
+         * 数据内容
+         * <P> 类型：TEXT </P>
          */
         public static final String CONTENT = "content";
 
 
         /**
-         * Generic data column, the meaning is {@link #MIMETYPE} specific, used for
-         * integer data type
-         * <P> Type: INTEGER </P>
+         * 通用数据列，其含义取决于{@link #MIMETYPE}，用于整数数据类型
+         * <P> 类型：INTEGER </P>
          */
         public static final String DATA1 = "data1";
 
+        
         /**
-         * Generic data column, the meaning is {@link #MIMETYPE} specific, used for
-         * integer data type
-         * <P> Type: INTEGER </P>
+         * 通用数据列，其含义取决于{@link #MIMETYPE}，用于整数数据类型
+         * <P> 类型：INTEGER </P>
          */
         public static final String DATA2 = "data2";