update

@@ -590,11 +590,8 @@ class UpdateSeoTdk extends Command
                     // 前后缀如果已经存在， 就不在拼接当前类型
                     if (FALSE !== strpos($topic, $keyword))
                         return $str;
-                    //处理单词复数 s es ies ves
-                    $keyword = rtrim($keyword, 'ves');
-                    $keyword = rtrim($keyword, 'ies');
-                    $keyword = rtrim($keyword, 'es');
-                    $keyword = rtrim($keyword, 's');
+                    //复数转单数
+                    $keyword = Str::singular($keyword);
 
                     $topic_words = explode(" ", $topic);
                     if($type == 'prefix' && Str::startsWith($topic_words[0], $keyword)){
@@ -605,21 +602,27 @@ class UpdateSeoTdk extends Command
                     }
                 }
             }
-            //随机取
+            //随机取 并单复数去重
             shuffle($fix_keyword);
-            if (count($fix_keyword) < $num)
-                return implode(", ", $fix_keyword);
-            $keyword = array_slice($fix_keyword, 0, $num);
-            $str = implode(", ", $keyword);
-
-            // 前后缀内部去重
-            foreach ($keyword as $k=>$v){
-                $tmp = rtrim($v, 's');
-                if (substr_count($str, $tmp) > 1) {
-                    unset($keyword[$k]);
-                    $str = implode(", ", $keyword);
+            $keywords = [];
+            foreach ($fix_keyword as $v){
+                if($num == 0){
+                    break;
+                }
+                $is_repeat = false;
+                foreach ($keywords as $keyword){
+                    if(Str::singular($keyword) == Str::singular($v)){
+                        $is_repeat = true;
+                        break;
+                    }
+                }
+                if($is_repeat){
+                    continue;
                 }
+                $keywords[] = $v;
+                $num--;
             }
+            $str = implode(', ', $keywords);
         }
         return $str;
     }