Nutrition is considered the process, the behavioral process by which people require--acquire nutrients, and use them to promote vital activities.

营养作用就是营养的供给和摄取,也就是人们摄取营养,并将其转化为生命力的行为过程

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So maybe a better way to talk about it would just be: Life's a biological process; we're all familiar with that process, sort of, in its middle stretches.

也许对此更好的表述方式是,生命是一个生物学过程,我们对这个过程都很熟悉,在它的中期

耶鲁公开课 - 死亡课程节选

These are two examples I just gave you of introducing genes that affect the life of a cell, either by making it express a protein that it's not making properly that's important to its life, or by intentionally killing a cell by having it express a fatal gene.

刚才我所举两个例子,都只是影响单一细胞生命过程的,无论是使无法正常表达的重要蛋白,正常表达也好,或是有意地,导入致命的基因杀死细胞也好

耶鲁公开课 - 生物医学工程探索课程节选