1、It reduces construction period of 30%, economic and social benefit is very good.
工期縮短了30%，經(jīng)濟(jì)及社會(huì)效益十分顯著。

2、"The rule is expected to provide a modest net social benefit to society, " FDA said.
FDA表示，“該規(guī)則預(yù)計(jì)將為社會(huì)提供適度的凈社會(huì)效益（預(yù)估效益減去預(yù)估成本）?！?/p>

3、Estimative Analysis of the Social Benefit of Shanghai UMT System
上海城市軌道交通體系社會(huì)經(jīng)濟(jì)效益估算分析

social benefit翻譯