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

The other is that this kind of adherence gives the tissue a property that's useful, in this case the property is it can serve as a barrier to nutrients from entering our body.

另外这种黏附,给予组织一种非常有用的属性,这种属性表现为组织成为,营养物质进入身体过程中的屏障

耶鲁公开课 - 生物医学工程探索课程节选

These cells around the outside form the interface, the placenta, where the maternal blood circulation meets the embryonic circulation and nutrients are passed back and forth that way in a very highly regulated and important way.

外层的细胞形成接触面,即胎盘,是母血与胎血,进行血液交换,及营养物质交换的场所,整个过程高度有序并且非常重要

耶鲁公开课 - 生物医学工程探索课程节选