diff --git a/app/controllers/announcements_controller.rb b/app/controllers/announcements_controller.rb
index 576e284..7187078 100644
--- a/app/controllers/announcements_controller.rb
+++ b/app/controllers/announcements_controller.rb
@@ -340,6 +340,7 @@ class AnnouncementsController < ApplicationController
     img_src = nil
     subtitle_ann = announcement.subtitle if announcement.display_subtitle?
     img_src = (announcement.image.thumb.url || "/assets/announcement-default.jpg") if announcement.display_img?
+    img_description = announcement.image_description if announcement.image_description.present?
 
     {
       "tags" => tags,
@@ -353,6 +354,7 @@ class AnnouncementsController < ApplicationController
         "body" =>announcement.text,
         "image" => announcement.image.url,
         "img_src" => img_src,
+        "img_description" => img_description,
         "alt_title" => desc
       },
       "impressionist" => (announcement.is_preview ? nil : announcement),
diff --git a/app/views/admin/announcements/_form.html.erb b/app/views/admin/announcements/_form.html.erb
index 96b6587..62ebf88 100644
--- a/app/views/admin/announcements/_form.html.erb
+++ b/app/views/admin/announcements/_form.html.erb
@@ -69,7 +69,7 @@
 
       <!-- display subtitle -->
       <div class="control-group">
-        <%= f.label :display_subtitle, 'display subtitle', :class => "control-label muted" %>
+        <%= f.label :display_subtitle, t("announcement.display_subtitle"), :class => "control-label muted" %>
         <div class="controls">
           <%= f.check_box :display_subtitle %>
         </div>
@@ -77,7 +77,7 @@
 
       <!-- display img src -->
       <div class="control-group">
-        <%= f.label :display_img, 'display img src', :class => "control-label muted" %>
+        <%= f.label :display_img, t("announcement.display_img"), :class => "control-label muted" %>
         <div class="controls">
           <%= f.check_box :display_img %>
         </div>
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 5c2479a..550dd01 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -93,4 +93,6 @@ en:
     resend_mail: Re-send Email
     is_external_link: Enable External Link
     external_link: External Link
-    external_link_hint: "Make sure URL starts with http://"
\ No newline at end of file
+    external_link_hint: "Make sure URL starts with http://"
+    display_subtitle: Display Subtitle
+    display_img: Display Cover Image
diff --git a/config/locales/zh_tw.yml b/config/locales/zh_tw.yml
index a64f0fe..5980d73 100644
--- a/config/locales/zh_tw.yml
+++ b/config/locales/zh_tw.yml
@@ -98,3 +98,5 @@ zh_tw:
     is_external_link: 連結外部網址
     external_link: 外部連結
     external_link_hint: "確定連結開頭為http://"
+    display_subtitle: 顯示副標題
+    display_img: 顯示圖片