You find it in datable places and that's why we can give this some kind of date, such as in Egypt.

你会发现它属于一个可确定年代的地区,这正是可甄别此文明所属年代的原因,例如在埃及

耶鲁公开课 - 古希腊历史简介课程节选

Well, for instance, you could build machines that when babies suck on a pacifier they hear music or they hear language, and then you could look at how much they suck on the pacifier to determine what they like.

举例来说,你可以制造一个机器,每当婴儿吮吸奶嘴,他们就会听到音乐或是话语,然后你可通过观察婴儿有多喜欢吮吸奶嘴,来确定他们喜欢音乐还是话语

耶鲁公开课 - 心理学导论课程节选