Both King and Hooks wanted to effect social change through a combination of moral force and legislation.

VOA: standard.2010.04.16

Other people might have other interests, but we'll talk a lot about social change and what might be done ultimately to effect the environment.

其他人可能会关心另外一些问题,但我们会谈很多关于社会变迁,及对于改变环境,我们最多能做到什么

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选