Mosee says that for the young women in her book, their children provided the motivation for them to struggle and succeed.

VOA: standard.2009.12.04

And the motivation for choosing a pair like that is easy to see, if we look at our condition for spontaneous change or general condition.

我们这样选择的动机,很明显，如果考察我们所考虑的自发变化的条件,或者更一般的条件。

麻省理工公开课 - 热力学与动力学课程节选

So I look to myself and look at the past and see it as the motivation for me to move on.

所以，我看着自己，回顾过往，把过去当做自己前进的动力。

对你而言，钱是？ - SpeakingMax英语口语达人

That is also possible. If a mother has stopped breast-feeding for sometime, she can resume breast-feeding if she has the proper motivation and support from a skilled person."

VOA: standard.2009.08.01

So it was very important that we keep the motivation high so that they were not in the compassion of time and the requirement set for very high-stress jobs climbs under the way.

使这一动机足够强烈,是十分重要的,这样不会过分在乎时间,高压力工作带来的要求,也就不那么重要了。

麻省理工公开课 - 媒体、教育、市场课程节选

"That wasn't at all the motivation for making the movie.

VOA: standard.2010.01.08

Because you see, also motivation and energy-- you don't need research for that, you know that when you are feeling good, you have more motivation, you have more energy-- of course, there is a lot of research to back that up.

因为动力和精力-,不需要研究就能明白，你知道感觉好时，动力和精力更充沛-,当然有很多研究支持这一点。

哈佛公开课 - 幸福课课程节选

I understand the motivation for people that say it's a good idea.

我理解那些说它是一个好主意的人的动机。

对于义务投票制 - SpeakingMax英语口语达人

The jealousy of the suzerain is the motivation for prohibitions against certain intimate contacts with non-Yahweh peoples, because these alliances will end up entailing recognition of the gods of these peoples.

领主的嫉妒成为禁止与非耶和华信仰的人,进行亲密接触的诱因,因为与这些盟国接触，会导致对这些人所崇拜的神的认同。

耶鲁公开课 - 旧约导论课程节选