diff --git a/themes/nav/components/BlogPostCard.js b/themes/nav/components/BlogPostCard.js
index d52ef0e6..cc3934e0 100755
--- a/themes/nav/components/BlogPostCard.js
+++ b/themes/nav/components/BlogPostCard.js
@@ -22,6 +22,8 @@ const BlogPostCard = ({ post, className }) => {
         </div>
     </Link>
   )
+
+  // 检查连接是否是外链
   function sliceUrlFromHttp(str) {
     // 检查字符串是否包含http
     if (str.includes('http')) {