I think that these countries are somewhat trying to manage this oil risk but they can't yet get onto the frontier.

我想这些国家或多或少,都试着控制石油风险,但他们根本无法达到有效边界。

耶鲁公开课 - 金融市场课程节选

where the super model could not be an effective model for bikinis after a certain age.

比基尼模特在达到一定的年龄后就无法再担任这份工作了。

退休很神奇 - SpeakingMax英语口语达人

So, the idea that theorists suggest-- and it may be unreachable-- but the perfect financial system would have all of our risks pooled completely.

理论家提出的这一理论-,可能无法达到-,但是一个完美的金融体系,能够将所有的风险完全分摊。

耶鲁公开课 - 金融市场课程节选

So the concept of an absolute zero, a temperature below which you just can't go, that's directly out of the scheme here, this linear interpolation scheme with these two reference points.

这就是绝对零度，这样，从线性插值的图像出发，我们得到了绝对零度的概念，你永远无法达到,低于绝对零度的状态。

麻省理工公开课 - 热力学与动力学课程节选

For you cannot do so without friends and comrades you can trust.

因为你无法达到公正,如果你身边没有值得信赖的同僚与伙伴。

耶鲁公开课 - 政治哲学导论课程节选

So the point is, once you're at equilibrium none of the other states they're accessible, the system could rearrange itself to form them, but there is no accessible state that has higher entropy than the equilibrium state.

所以要点在于，如果你处于平衡态,其他所有的态都无法达到，我们可以重组体统来形成这些态，但没有一个可以达到的态,有比平衡态大的熵。

麻省理工公开课 - 热力学与动力学课程节选

Last time we reach the third law which is telling us that we can't quite get to zero degrees Kelvin .but that as the temperature approaches zero degrees Kelvin, the absolute entropy of a pure substance in perfect crystalline form is zero.

上次课我们得到了热力学第三定律,这个定律告诉我们我们无法,达到0K的温度,但是在我们接近绝对零度的过程中，以完美晶体形式存在的纯物质的绝对熵,也趋向于零。

麻省理工公开课 - 热力学与动力学课程节选