Secretary Clinton said current levels of debt and deficits cannot continue without the United States losing influence and being limited in the decisions it has to make.

VOA: special.2010.05.29

But there is nothing saying you cannot take magnesium and mix it with oxygen and make magnesium oxide.

同样的道理，如果将镁,与氧一起反应，就会得到氧化镁。

麻省理工公开课 - 固态化学导论课程节选

That's unethical behavior because it -if you keep trading too much, then you cannot possibly make money.

这是不道德的行为,因为,如果你一直过度交易,那你基本不可能赚到钱

耶鲁公开课 - 金融市场课程节选

I cannot even make it look hard because I have memorized this problem from childhood, so there is no way I can make this look difficult.

我不会让这些问题变得看起来复杂,因为这些问题我童年时就熟记于心,我无法让它变得复杂

耶鲁公开课 - 基础物理课程节选

And the answer is that-- yes it won't make a difference to our wellbeing but it also doesn't mean that we cannot increase our level of wellbeing.

答案是-,是的，它不会改变我们的幸福水平,但并不意味着,我们不能提升自己的幸福水平。

哈佛公开课 - 幸福课课程节选