It seems Pandora is the only place in the galaxy with deposits of a valuable new energy source worth untold millions back on Earth.

VOA: standard.2009.12.19

I've never seen anyone like them.' 'I found them in the West.'" So, there is that sense of the West as a source, and what he's going to do is take them back East.

我从未见过像他们一样的人’,’我在西部遇到他们的’“,对新西部的感觉成了一个源点，而他正想要把这群人带回东部。

耶鲁公开课 - 1945年后的美国小说课程节选

We do know, again, Thucydides is our source, that it was customary for colonies to send representatives back to the mother city for the religious observations that were common to them all, so that those create good feelings.

修昔底德的著作里提到,殖民地派遣代表回母邦,参与宗教仪式是他们的习俗,所以这使彼此间有了好感

耶鲁公开课 - 古希腊历史简介课程节选

It expands. You change your constraints on your system, you heat it up some more, then you take the heat source away, and you put it back in contact with the atmosphere. And you cool it a little bit, change the constraints, cool it a little bit more, and heat, and you've got a closed cycle engine.

让它与大气接触冷却,改变约束，使它继续冷却，然后又再次加热,这就是循环热机，我们以前也研究过，更复杂的机器。

麻省理工公开课 - 热力学与动力学课程节选

SRC back One is called SRC for Source and one is called SRC.back which was my backup of today's source code in case I screw up.

其中一个叫SRC，用来装源代码，另一个叫,用来备份源代码，以防我搞砸了。

哈佛公开课 - 计算机科学课程节选