When I count, there are only you and I together But when I look ahead up the white road There is always another walking beside you.

VOA: special.2010.02.24

The way he described is when you try to get down a quantum dimensions and you are standing there with your camera, just remember the sun is at your back and your shadow is always in the picture.

这种方法被他描述为,当你试着处理一个量子尺寸时,并且你试着拿着你的相机在那，记住太阳在你的背后,而你的影子总是在照片上。

麻省理工公开课 - 固态化学导论课程节选

If that doesn't happen, there are always, you know, there's like, a Teach For America.

如果没有好转，我们可以参加美国教育计划。

就业很难 - SpeakingMax英语口语达人

There are some simple things that you should always look at when you're looking for bugs.

当你在找错误的时候,需要注意几件简单的事。

麻省理工公开课 - 计算机科学及编程导论课程节选

So you don't want to put in a negative energy, that's not going to help you out, you need to put in positive energy to get an electron out of the system. So that's why you'll find binding energies are always negative, and ionization energies are always going to be positive, or you could look at the equation and see it from there as well.

因为这对电离没有帮助,你需要一个正的能量,使得电子脱离这个系统,这就是为什么你会发现,结合能总是负的而电离能总是正的,或者你们看这个方程也可以发现这一点。

麻省理工公开课 - 化学原理课程节选

You know, there's a lot of beautiful buildings, a lot of people are always around.

有很多美丽的建筑，周围的人也很多。

喜欢环境法课程 - SpeakingMax英语口语达人

and you notice that no matter where you go, there are always Chinese characters,

你会发现，不管你走到哪里，都会有汉字。

I wish 课堂 - SpeakingMax英语口语达人