So iron left to own devices in the atmosphere in the presence of a little bit of water, with the water form iron oxide.

铁在大气中，在存在,少量水的条件下，大气会开始与水结合产生氧化铁。

麻省理工公开课 - 热力学与动力学课程节选

But the presence of the dog there is a conditioned stimulus and so you grew to be afraid of dogs.

而这时狗的存在就变成了条件刺激,所以你开始对狗心生恐惧。

耶鲁公开课 - 心理学导论课程节选

One of the things that estrogen does when cells are exposed to estrogen is that certain genes get turned on that weren't turned on in the estrogen-free state.

雌激素的功能是,当细胞所处环境中有雌激素时,一些在雌激素不存在的条件下,无法表达基因就能够表达

耶鲁公开课 - 生物医学工程探索课程节选

Well, how about all the points in between?

两点之间还存在满足条件的点吗

耶鲁公开课 - 博弈论课程节选

Well, when Pavlov, for instance, started before conditioning there was simply an unconditioned stimulus, the food in the mouth, and an unconditioned response, saliva.

比如，在条件作用形成之前,只是简单的存在着无条件刺激，即食物，以及无条件反应，即唾液。

耶鲁公开课 - 心理学导论课程节选

Mechanisms like habituation, classical conditioning and operant conditioning are real; they can be scientifically studied; and they play an important role in the lives of animals and probably an important role in human lives as well.

诸如习惯化，经典条件作用，操作性条件作用之类的机制,都是真实存在的;,这些机制都能得到科学的研究;,它们在动物的生活里起到了重要的作用,或许在我们人类的生活中,也同样起到了重要的作用。

耶鲁公开课 - 心理学导论课程节选