Our relationship with water has changed a lot too and a lot of that is due to marketing.

我们和水的关系也改变了很多,这都是拜市场化所赐

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Then from these beginnings, engineers transformed life in the twentieth century: a lot of things started in the twentieth century and became common place.

从此开始,工程师们改变了二十世纪的生活,有很多东西在二十世纪发明并得到普及

耶鲁公开课 - 生物医学工程探索课程节选

Now you're saving a few calories because you don't even have to do that, so the food environment's changed in a lot of ways.

现在不需要这样,又节省了些力气,所以说食品环境改变了很多

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

And when you're switching n's, you're actually getting quite a bit farther away.

而当你改变，n，的大小时，实际上每一步你都会变远了很多。

麻省理工公开课 - 化学原理课程节选