But Miz Goodall believed that to understand animal behavior, the observer had to see the animals as individuals, not as interchangeable objects.

VOA: special.2009.11.18

So, that's the basic insight in Modigliani and Miller, that share repurchase and dividend are really interchangeable; it's just all a conceptual difference.

这即是莫迪利阿尼和米勒命题的内涵,股票回购和分红彼此是可替代的,只是概念上有所不同

耶鲁公开课 - 金融市场课程节选

Another important concept in probability theory that we will use a lot is expected value, the mean, or average-- those are all roughly interchangeable concepts.

概率论中另外一个常用的重要的概念是,期望值或者也叫均值,这两个概念可以互换

耶鲁公开课 - 金融市场课程节选

So and are interchangeable in a sense that appears where would appear in RNA and appears where would appear in DNA.

某种意义上和是可互换的,在RNA中以U替代了T,在DNA中以T取代了U

耶鲁公开课 - 生物医学工程探索课程节选