Warning: file_put_contents(): Only 0 of 5247 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/cp667.com/index.php on line 55 demographist是什么意思，demographist的翻译，demographist音标、读音、用法和例句_淳朴汉英词典
It is concerned that the problem of population carrying capacity and demographist had proposed the different maximum of the population carrying capacity. 摘要对于地球的人口容量问题，人口学者曾做过许多尝试，并提出了不同版本的人口容量阙值。