Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/0da4c7798396559fd03729740f33a70c.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 propositional function是什么意思，propositional function的翻译，propositional function音标、读音、用法和例句_沉淀汉英词典