Warning: file_put_contents(/www/wwwroot/zidian/biehu.cn/cache/17e405567dac04c9480bc62d413a3285.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/biehu.cn/index.php on line 58 qualitative design variable是什么意思，qualitative design variable的翻译，qualitative design variable音标、读音、用法和例句_甲百汇小鸡词典