So you start with your basic model, then you add in, you enrich the model, and you see if the results change, and that'll help you explain why you're getting different results in different settings.

你们从最原始的模型开始,加入约束条件来丰富这个模型,然后检验结果是否有变,这能帮助我们解释,为什么在不同条件下结果是不同的

耶鲁公开课 - 博弈论课程节选

If I took two double stranded DNA molecules and I exposed them to certain conditions that caused them to denature, that means its native structure falls apart.

假如我把两条DNA双链,放在特定的条件下,使它们变性,变性表示使它们的原始结构分开

耶鲁公开课 - 生物医学工程探索课程节选