Warning: file_put_contents(/www/wwwroot/zidian/diubi.cn/cache/a48fe3c8f10173683d4e84666a312864.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/diubi.cn/index.php on line 59 optional sampling是什么意思，optional sampling的翻译，optional sampling音标、读音、用法和例句_果味酸柯林斯词典