Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/ac9e601ccac9c6fa0245caeecf046c0d.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 convenience sample是什么意思,convenience sample的翻译,convenience sample音标、读音、用法和例句_沉淀汉英词典