diff --git a/isso/js/app/i18n/zh_CN.js b/isso/js/app/i18n/zh_CN.js
index e1fbc37..fd002de 100644
--- a/isso/js/app/i18n/zh_CN.js
+++ b/isso/js/app/i18n/zh_CN.js
@@ -1,11 +1,12 @@
 define({
-    "postbox-text": "在此输入评论 (最少 3 个字符)",
-    "postbox-author": "名字 (可选)",
-    "postbox-email": "E-mail (可选)",
-    "postbox-website": "网站 (可选)",
+    "postbox-text": "在此输入评论（最少 3 个字符）",
+    "postbox-author": "名字（可选）",
+    "postbox-email": "电子邮箱（可选）",
+    "postbox-website": "网站（可选）",
     "postbox-preview": "预览",
     "postbox-edit": "编辑",
     "postbox-submit": "提交",
+    "postbox-notification": "有新回复时发送邮件通知",
 
     "num-comments": "1 条评论\n{{ n }} 条评论",
     "no-comments": "还没有评论",
diff --git a/isso/js/app/i18n/zh_TW.js b/isso/js/app/i18n/zh_TW.js
index 0a64c00..c5176c2 100644
--- a/isso/js/app/i18n/zh_TW.js
+++ b/isso/js/app/i18n/zh_TW.js
@@ -1,11 +1,12 @@
 define({
     "postbox-text": "在此輸入留言（至少 3 個字元）",
-    "postbox-author": "名稱 (非必填)",
-    "postbox-email": "電子信箱 (非必填)",
-    "postbox-website": "個人網站 (非必填)",
+    "postbox-author": "名稱（非必填）",
+    "postbox-email": "電子信箱（非必填）",
+    "postbox-website": "個人網站（非必填）",
     "postbox-preview": "預覽",
     "postbox-edit": "編輯",
     "postbox-submit": "送出",
+    "postbox-notification": "訂閱回复的電子郵件通知",
 
     "num-comments": "1 則留言\n{{ n }} 則留言",
     "no-comments": "尚無留言",