Warning: file_put_contents(/www/wwwroot/zidian/diubi.cn/cache/6160ffd0c8ce68160d03ad747908f348.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/diubi.cn/index.php on line 59 step-down allocation是什么意思，step-down allocation的翻译，step-down allocation音标、读音、用法和例句_果味酸柯林斯词典