A mule is not spending 1/2 of its time as a donkey, and 1/2 of its time as a horse, we don't see it flickering back and forth between the two, that's not what we see.

骡子并不是一半的时间是驴，另一半的时间是马，我们不会看到它在两者之间来回变化，这不是我们所看到的情况。

麻省理工公开课 - 化学原理课程节选

but we need a sense of growth, not just spending to keep us out of depression essentially

但是我们需要有增长意识，不能只是通过花钱来让我们免于陷入危机。

担忧未来 - SpeakingMax英语口语达人

and most, perhaps, obviously-- if you're just spending your life floating in the scientist's lab, you're not actually accomplishing anything.

显而易见-,如果你只是漂浮在科学实验室里，你实际上没有完成任何事情。

耶鲁公开课 - 死亡课程节选

End up where you started. It's not quite the same as the shortest path, and figure out the way to do that that involves spending the least money. Or the least time, or something else.

最后回到最初的地方,这和最短路径问题有些不同,需要找出一条花费最少,或者费时最少或者满足其它条件的路径。

麻省理工公开课 - 计算机科学及编程导论课程节选

This is often the way relationships start "We like each other, I'm physically attracted to each other, I-- to you, I enjoy spending time with you but I'm not making any long-term commitments.

爱情经常以这种形式开场,我们喜欢对方，享受肌肤之亲-,享受一起度过的时光,但不做长远的承诺。

耶鲁公开课 - 心理学导论课程节选

You're not going to have a writer spending a month on the representation of a barber from Kasbeam.

这个作者才不会花一个月的时间,在如何表现一个从Kasbeam来的理发师上下功夫。

耶鲁公开课 - 1945年后的美国小说课程节选