Warning: file_put_contents(/www/wwwroot/zidian/diubi.cn/cache/0342a25158a8528eb1fe22b49a21d3ed.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/diubi.cn/index.php on line 59 income-cost例句_income-cost英汉例句_income-cost双解例句_果味酸柯林斯词典
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，必须改变利他行为的成本收益比，提高利他行为的收益来激发人们的利他行为。