Warning: file_put_contents(): Only 0 of 5249 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 population adverse selection是什么意思，population adverse selection的翻译，population adverse selection音标、读音、用法和例句_沉淀汉英词典
The adverse selection of population quality of China is not only the research object of many subject, but also is arguing focus of academe. 中國的人口素質逆淘汰問題不僅是多學科的研究對象，而且是學術界爭論的焦點。