社会边际收益的英文怎么说

社会边际收益的英文：
marginal social benefit

marginal initial
边缘原始细胞[见于植物]

We came to the margin of the wood.
我们来到树林的边缘。

margin release mechanism
极限释放机构

A social debut.
首次进入社交界，首次演出

Slavery was once socially sanctioned.
奴隶制曾经为社会所认可。

social service facility
社会服务场所

benefit of the doubt
裁判员对可疑情况无把握时不对有关运动员作不利判定

It is possible to overstate the benefits of stabilization.
稳定性带来的好处有可能被夸大。

The flowers were a fringe benefit.
这些鲜花可算是额外的报酬。