Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/e867a64f0d5f300bce500c2a47776398.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 roof-bolt drill是什么意思，roof-bolt drill的翻译，roof-bolt drill音标、读音、用法和例句_沉淀汉英词典