Warning: file_put_contents(/www/wwwroot/ppbbu/laei.cn/cache/14df5fe306e0d689cf1d8a9b770316e4.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/laei.cn/index.php on line 58 lowest observed frequency是什么意思，lowest observed frequency的翻译，lowest observed frequency音标、读音、用法和例句_按摩法牛津词典