diff --git a/java/net/micode/notes/gtask/data/MetaData.java b/java/net/micode/notes/gtask/data/MetaData.java
index 3a2050b..0554509 100644
--- a/java/net/micode/notes/gtask/data/MetaData.java
+++ b/java/net/micode/notes/gtask/data/MetaData.java
@@ -28,30 +28,34 @@ import org.json.JSONObject;
 public class MetaData extends Task {
     private final static String TAG = MetaData.class.getSimpleName();
 
-    private String mRelatedGid = null;
+    private String mRelatedGid = null;// 关联的Google Tasks ID
 
+	// 设置元数据信息
     public void setMeta(String gid, JSONObject metaInfo) {
         try {
             metaInfo.put(GTaskStringUtils.META_HEAD_GTASK_ID, gid);
         } catch (JSONException e) {
             Log.e(TAG, "failed to put related gid");
         }
-        setNotes(metaInfo.toString());
-        setName(GTaskStringUtils.META_NOTE_NAME);
+        setNotes(metaInfo.toString());// 将元数据转为JSON字符串并存入笔记
+        setName(GTaskStringUtils.META_NOTE_NAME);// 设置笔记名称为元数据专用名称
     }
 
+	// 获取关联的Google Tasks ID
     public String getRelatedGid() {
         return mRelatedGid;
     }
 
+	// 判断是否值得保存
     @Override
     public boolean isWorthSaving() {
-        return getNotes() != null;
+        return getNotes() != null;// 只要有备注内容就值得保存
     }
 
+	// 从远程JSON设置内容
     @Override
     public void setContentByRemoteJSON(JSONObject js) {
-        super.setContentByRemoteJSON(js);
+        super.setContentByRemoteJSON(js);// 调用父类方法设置基本内容
         if (getNotes() != null) {
             try {
                 JSONObject metaInfo = new JSONObject(getNotes().trim());
@@ -63,17 +67,18 @@ public class MetaData extends Task {
         }
     }
 
+	// 从本地JSON设置内容
     @Override
     public void setContentByLocalJSON(JSONObject js) {
         // this function should not be called
         throw new IllegalAccessError("MetaData:setContentByLocalJSON should not be called");
     }
-
+	// 获取本地JSON内容
     @Override
     public JSONObject getLocalJSONFromContent() {
         throw new IllegalAccessError("MetaData:getLocalJSONFromContent should not be called");
     }
-
+	// 获取同步操作
     @Override
     public int getSyncAction(Cursor c) {
         throw new IllegalAccessError("MetaData:getSyncAction should not be called");