Mr. Bahtiarian says the main source of noise pollution is the propeller.

VOA: special.2011.06.29

What that basically says is the following: in an interpreted language, you take what's called the source code, the thing you write, it may go through a simple checker but it basically goes to the interpreter, that thing inside the machine that's going to control the flow of going through each one of the instructions, and give you an output.

也就说，如果是解释语言的话：,你要写一些叫做，源码的东西，你写的东西会经过一个简单的过滤器,然后解释器会处理你的源码，解释器会产生一个,逐条读取你的源码的,控制流，然后返回一个输出结果。

麻省理工公开课 - 计算机科学及编程导论课程节选

There's ancient evidence, there's an ancient source for that, that says that's what happened and that's one of the things that we have to deal with.

这里有古老的证据,有一份古代的资料表明,事情就是这样发生的,这也是我们要处理的问题之一

耶鲁公开课 - 古希腊历史简介课程节选

He says Afghan and international officials must tackle both the source and the consequences of the nation's drug problem.

VOA: standard.2010.06.23

U.S.Treasury Secretary Timothy Geithner says China has taken steps to modify a controversial policy that was a source of growing concern among U.S.

VOA: standard.2010.05.25

Holbrooke says the long-held notion that Afghanistan's illicit opium trade is the main source of funding for the insurgency is simply not true.

VOA: standard.2009.06.15

(Speaking) Institute director Eric Leonhardt says he's had his eye on the dairy herd as a source of transportation fuel for a long time.

VOA: standard.2010.02.23

(Speech) He says that today, the propaganda of arrogant nations of the world is the main source for the existence of conflict inside Iran.

VOA: standard.2009.12.07