modern social activity

According to the theory of modern new system economics, the motion of a social activity depends on the resultant forces of formal system arrangement and informal system arrangement.

根据现代新制度经济学理论，一项社会活动的运行是正式制度安排与非正式制度安排合理作用的结果。

Before the modern social security system is set up, the social security activity of engaged in society's succoring by various kinds of nonprofit organization.

现代社会保障制度建立之前，各类非营利组织(特别是教会组织)就以各种方式从事社会救助等社会保障活动。

In modern basin in the environment, due to human activity in size and strength, improving the social economic system has quite deep influence on the water resources system and ecological system.

在现代流域环境中，由于人类活动规模和强度在不断的提高，社会经济系统已相当深入地影响了水资源系统和生态系统。