Warning: file_put_contents(/www/wwwroot/ppbbu/62383.com/cache/f2f353b55183f6d11458b80baf31d8c1.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/62383.com/index.php on line 55 concaveness是什么意思，concaveness的翻译，concaveness音标、读音、用法和例句_流逝汉英词典