Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/9540a0b0fe2f8c22225370ca06b027c3.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 mainspring (n.)是什么意思，mainspring (n.)的翻译，mainspring (n.)音标、读音、用法和例句_沉淀汉英词典