update

@@ -689,6 +689,11 @@ class UpdateSeoTdk extends Command
         if ($type == 'suffix' && count($keywords) == 1 && in_array(Arr::last($topic_words), $all_suffixes)) {
             return ', ' . $keywords[0];
         }
+
+        //前缀空格隔开
+        if($type == 'prefix'){
+            return implode(' ', $keywords);
+        }
         return implode(', ', $keywords);
     }