The little insects were crawling around, the plants were there. And come back and look at it, over a period of weeks, and see what's changing.

我可以看到昆虫爬来爬去，还看到有些植物，几个星期后，再来看，看看发生了什么变化。

普林斯顿公开课 - 人性课程节选

A new addition to this as well is the fact that you see the figure climbing the stairs, which connotes the importance of physical activity.

这里还有一个新增加的东西,那就是你可以看到一个在爬楼梯的人影,这暗示着体育活动的重要性

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选