He says because GM crops can be designed to be resistant to insects and disease they may also be better for the environment.

VOA: standard.2009.10.21

Keep in mind this is a professional degree and executive education model that is intended to be designed for people who are themselves working full time and still taking classes full time.

请记住这是一个职业学位,高级管理人员教育模式,就是为那些,全职工作的人员设计的,同时上全制日课程。

哈佛公开课 - 幸福课课程节选