You can imagine other ways of doing this, or ways of doing this same thing in different ways.

你也可以想出别的方法,或者达到相同目的的其他途径

耶鲁公开课 - 生物医学工程探索课程节选

Hard to imagine anybody doing this for more than a couple of hours.

很难想象谁能持续几个小时这样做

耶鲁公开课 - 古希腊历史简介课程节选