What this is is learning the relationships between what you do and how successful or unsuccessful they are, learning what works and what doesn't.

操作性条件作用,是在学习行为与成功,或失败程度之间的关系，学习什么行为起作用,什么行为不起作用。

耶鲁公开课 - 心理学导论课程节选

They lose, and they're forced to surrender Azov to the Turks after an unsuccessful war.

他们被打败,在一场战败之后,俄国不得不把亚速奉还给土耳其人

耶鲁公开课 - 欧洲文明课程节选

But if there is another argument for that claim, I'm eager to hear it, because this argument, at any rate, seems to me to be unsuccessful.

但如果确实有这种论点存在，我迫不及待地想听一听，因为这个论点无论怎么看，似乎都不会说得通。

耶鲁公开课 - 死亡课程节选

There are successful coupon clippers and there are successful securities resellers and they tend to make their money off of the unsuccessful people in the other class.

既有成功的票息剪券投资者,也有成功的债券经销商,他们希望从其他阶层,不太成功的投资者身上赚钱。

耶鲁公开课 - 金融市场课程节选

The sermons were entirely unsuccessful.

这个布道也没取得一点成功。

耶鲁公开课 - 心理学导论课程节选

And so, Descartes' attempt to establish the distinctness of the mind, the immateriality of the mind, on the basis of this Cartesian thought experiment, I think that's unsuccessful.

所以,笛卡尔试图,用他的卡式思想实验来证明,心灵的独立存在性,和非物质性,我认为这种尝试是失败的

耶鲁公开课 - 死亡课程节选