Warning: file_put_contents(/www/wwwroot/ppbbu/laei.cn/cache/ec64877626f66582639e70fb22bd80d2.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/laei.cn/index.php on line 58 conservation (n.)是什么意思,conservation (n.)的翻译,conservation (n.)音标、读音、用法和例句_按摩法牛津词典