Warning: file_put_contents(/www/wwwroot/ppbbbu/n94.cn/cache/308e3d0b691b9a3c3b229e4c237f4550.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/n94.cn/index.php on line 55 social time preference rate是什么意思，social time preference rate的翻译，social time preference rate音标、读音、用法和例句_94生活常识网有道词典