Warning: file_put_contents(): Only 0 of 6491 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/001308.com/index.php on line 55 income-cost是什么意思，income-cost的翻译，income-cost音标、读音、用法和例句_零食美味英文词典
So we must change the proportion of the cost and income for the altruistic behavior, and arouse persons' altruistic behavior by improving the income for the altruistic behavior. 因此，必須改變利他行爲的成本收益比，提高利他行爲的收益來激發人們的利他行爲。