He got the idea for Khan Academy four years ago, when he taught a young cousin how to convert kilograms to grams.

VOA: standard.2010.03.26

That's what fat cells do, they convert glucose into a form for storage.

这也就是脂肪细胞的工作,它们将糖转化为另一种形式储存起来

耶鲁公开课 - 生物医学工程探索课程节选