She says different countries need different solutions based on location,environment, climate and population needs.

VOA: special.2009.07.28

So, I infer the existence of atoms based on the fact that doing that allows me to explain things that need explaining.

所以说我推测原子的存在是基于,该假设使得我能够解释,所需解释的一些现象

耶鲁公开课 - 死亡课程节选

Now we need to think about a model of the stock market And the model we're going to use is based on what's called the Efficient Market Hypothesis.

现在需要想一想一个股市的模型是怎样的,我们要用的模型是,基于有效率市场假说的。

麻省理工公开课 - 计算机科学及编程导论课程节选

"We feel,based on our experience in the last seven years, we feel that we need to enhance our legal capacity to extend the power of detention and the power of detention without charge,".

VOA: standard.2009.09.10

Which is why I think we need a bipartisan foreign policy based on our values that reaches out to the rest of the world.

这是为什么,我认为我们需要一个建立在价值观基础之上，两党连立的外交政策,我们依此和全世界打交道。

普林斯顿公开课 - 国际座谈会课程节选

Educators say the goal will be to improve student academic performance in math, science and technology courses, while giving them the tools they need to build lasting professional careers in a 21st-century, knowledge-based economy.

VOA: standard.2010.05.10

For those of you just walking in now, you might not have a chance to get all of the thought process that you need in on this clicker question, because it is based on a Lewis structure, so we will go over it.

那些刚刚进来的同学，你们可能没有机会时间来回答,因为答案是基于Lewis结构上的,所以我们赶紧看一下。

麻省理工公开课 - 化学原理课程节选