Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/b792ea58f14c332ed08f7be2719a9fa2.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 symmetrical banded structure是什么意思，symmetrical banded structure的翻译，symmetrical banded structure音标、读音、用法和例句_沉淀汉英词典