社会边际收益的英文：
marginal social benefit
adj. 边缘的；临界的；末端的
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
adj. 社会的；群居的；合群的；社交的
n. 联谊会；社会聚会
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
n. 利益，好处；救济金，津贴；利润
v. 有益于，受益
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。