On November eleventh, communities across the United States hold ceremonies to observe Veterans Day.

VOA: special.2010.11.05

And that's somewhat inconvenient because we're working with wave functions, but it's a reality that comes out of quantum mechanics often, which is that we're describing a world that is so much different from the world that we observe on a day-to-day basis, that we're not always going to be able to make those one-to-one analogies.

这对于研究氢原子，很不方便,但这就是事实,而且在量子力学中经常会出现这种事实,那就是我们要描述的世界，和我们日常所看到的世界,之间的差别是如此之大,以至于我们不能，做出一一对应的类比,但幸运的是我们不用管。

麻省理工公开课 - 化学原理课程节选

And what he said was that when you get down to atomic length scales there are limits, there are constraints on our ability to observe.

讲的就是,当你去进入到原子长度的尺度中,我们的观察能力,有一定的限制条件。

麻省理工公开课 - 固态化学导论课程节选

Jews didn't have to--they could observe the Sabbath, they didn't have to do things on the Sabbath that they didn't want to.

犹太人不必。。。可以过安息日，安息日那天他们不用做不想做的事。

耶鲁公开课 - 新约课程节选

At atomic length scale, limits on our ability to observe.

在原子长度问题上，我们的观察受限。

麻省理工公开课 - 固态化学导论课程节选