Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/766cfdcb9edf492c2734ea3c7698db29.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 descriptive sampling survey是什么意思，descriptive sampling survey的翻译，descriptive sampling survey音标、读音、用法和例句_沉淀汉英词典