But right now I am going to give it to you as Mendeleev enunciated it. Atomic number, we will learn later, is the improvement.

但是现在我就要告诉你们,门捷列夫发表了它，原子序数，我们之后会学到，那是很大的进步。

麻省理工公开课 - 固态化学导论课程节选

And I think that if you just focus on that even, you're going to get a lot more advanced.

我认为就算你仅仅关注这些，你也会取得很大进步的。

有这样的困难 - SpeakingMax英语口语达人

That's a huge improvement. And that's sort of the magic of dynamic programming.

这是一个很大的进步,这也是动态编程的魅力所在。

麻省理工公开课 - 计算机科学及编程导论课程节选

Let's move onto something that really took the giant step ahead, and that was Mendeleev.

我们换个话题,谈论一个很大的进步，那便是门捷列夫。

麻省理工公开课 - 固态化学导论课程节选