Warning: file_put_contents(/www/wwwroot/ppbbu/28094.com/cache/3fe7534a464bd7810fe69e0f32bc9695.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/28094.com/index.php on line 55 backing pulley是什么意思，backing pulley的翻译，backing pulley音标、读音、用法和例句_贰靶汉英词典