我们必须知道一些关于保护自己的建议。

We must know some advice about protecting ourselves.

youdao

我们必须知道卡尔什么时候来，这样我们才能给他订个房间。

We must find out when Karl is coming, so we can book a room for him.

youdao

我们必须知道，如何自信地说否定的不。

We need to know how to say a negative no with confidence.

youdao

If we want to look going forward at the equity premium, we have to know how much--what's the politics?

如果想预测未来的股权溢价是多少,我们必须知道...政治环境将会如何

耶鲁公开课 - 金融市场课程节选

Well, the reason, the way that we can check it is just to see if it's in between our two extreme 1 cases. We know that it has to be more than 1, because even if we had total shielding, 1 we would at least feel is the effective of 1.

好的我们可以检查它的原因和方式是观察,它是否在我们的两种极端案例之间,我们知道它必须大于，因为即使如果我们有完全的屏蔽，我们最小感到的有效值是。

麻省理工公开课 - 化学原理课程节选

It would be much better if you had a reference point that didn't care where the pressure was.

我们还需要精确地定义气压,你必须知道气压的大小,当然如果我们能找到一个。

麻省理工公开课 - 热力学与动力学课程节选