private function downloadWordsVoice($name, $force)
 {
     $params = array();
     if ($force) {
         $sql = "SELECT * FROM words WHERE 1 = 1";
     } else {
         $sql = "SELECT * FROM words WHERE (voice IS NULL or voice = '')";
     }
     if ($name != null) {
         $sql .= ' AND name = :name';
         $params['name'] = $name;
     }
     $sql .= " AND voice not like '%/%'";
     $handle = $this->db->executeQuery($sql, $params);
     while ($row = $handle->fetch()) {
         $entity = new WordsEntity();
         $entity->fromArray($row);
         try {
             $this->updateWord($entity, $force);
         } catch (\Exception $e) {
             $this->output->writeln(sprintf("word [%s] update failed, error info: %s", $entity->getName(), $e->getMessage()));
         }
     }
 }