下面一页我们将探究一下动物行为学的世界。

On the next page, we'll delve into the world of ethology.

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但在动物行为学的研究中，这种玩耍的现象是不平常的。

Yet in the study of animal behaviour, the phenomenon of play is an anomaly.

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行为学的一些预言，在其适用的范围以内，是绝对确定的。

The predictions of praxeology are, within the range of their applicability, absolutely certain.

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And if something from the field of consulting in organizational behavior could contribute, that became part of the class, as much as I could fit in of course in one semester.

而如果一些有关组织行为学的咨询领域的东西有用，那也会成为本课程的一部分，只要能在一个学期内讲完。

哈佛公开课 - 幸福课课程节选