In the past, we also issue letters before students' final year began to let them know what they needed to take in the final year to be OK, but we don't do that anymore.

在过去，我们也会在学生的最后一年开始前给他们发信息，告知他们在这一年要上什么课程才能顺利毕业，但我们现在不再这样做了。

youdao

They did hunt and they also raised cereal crops and kept sheep, but we don't know why so many of the paintings are of hunting scenes.

他们确实狩猎，也会种植粮食作物、饲养绵羊，但我们不知道为什么有这么多画与狩猎相关。

youdao

But we also know they can be overcome.

但我们也知道这些挑战可以被克服。

youdao

But I also know that we've got a long way to go to fully restore our economy and recover from what's been the longest and deepest downturn since the Great Depression."

VOA: special.2009.10.30

And in these experiments we not only need to learn what has been learnt, but also have to learn what it is that we don't know.

在这些试验里我们不仅,要知道已知的知识，还要知道,我们不知道的内容。

麻省理工公开课 - 媒体、教育、市场课程节选

So basically, at the time he was just going on size and then traits, but what we actually know today is that we can also order things in the periodic table by electron configuration.

基本上，在当时他只能通过大小,和特性来进行，但是现在我们已经知道了,我们还可以通过电子排布来对它们进行排序。

麻省理工公开课 - 化学原理课程节选

We have come so far, but we also know we have so much more work to do.

WHITEHOUSE: Remarks by the First Lady at a Campaign Event -- La Jolla, CA

But we also know we have to make smart investments in our future -- in education, infrastructure for an economy that's built to last.

WHITEHOUSE: Remarks by the First Lady at a Campaign Event

But we also know we've got to do more.

WHITEHOUSE: The White House