Warning: file_put_contents(/home/www/wwwroot/ndsq.cn/cache/4e73911068543a9e6a0a5603458a5e02.txt): failed to open stream: No space left on device in /home/www/wwwroot/ndsq.cn/index.php on line 55 concavity (n.)是什么意思,concavity (n.)的翻译,concavity (n.)音标、读音、用法和例句_開心英語字典_柠咚词