Kusugak says that the Inuit symbol used to represent the Vancouver Winter Games serves a special purpose in his culture, illustrating that his people were in the region, where to find food or whether there is fuel for fire.

VOA: standard.2010.02.19

Nutrients get broken down into several classes and these are the constituents of food that your body uses for one purpose or another.

营养素这个问题需要花几节课来讨论,它们是食物的组成要素,供给身体吸收,支持身体机能运转

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选