He delivers a brief TED-style talk, while behind him we see a topographic model of what looks like blackened lunar crust.

他做了一个TED风格的简短演讲，而他身后，我们看到了一个看似发黑的月壳模型。

And that is going to give you a topographic profile of this hill.

这将给你这个小山的剖面。

Like there was all this stuff you could sort of do with the topographic features.

就像你可以利特征来做很多事情。

Just like finding the elevation at two different areas on a topographic map.

就像图上找到两个不同区域的高度一样。

And so this would be a topographic map essentially.

这基本上就是一张图。

Topographic and ecological barriers, much more pronounced on some continents than on others, were locally important obstacles to diffusion.

和生态障碍某些大陆上比其他大陆上更为明显，是当传播的重要障碍。

Often times on a topographic map you will see what is called the contour interval.

图上，你经常会看到所谓的等高线间隔。

In sum, as far as geography is concerned, there are four recognizable and definable topographic regions in the United States.

总而言之， 就理而言，美国有四个可识别和可定义的区域。

And so in a topographic map those contour lines are going to show areas of equal elevation.

图上，这些等高线会显示相同高度的区域。

So over here in the topographic map it is gravitational potential.

所以图上，这是重力势能。

Get lost for a little while, but not like lost, lost, because you can take topographic and offline maps with you.

迷失一会儿， 但不是真的迷路，因为你可以图和离线图。

But what you can do is you can draw a topographic profile.

但是你可以绘制剖面。

So this a three dimensional map of this topographic map.

所以这是一个图的三维图。

Here on the north side of the mountains, where it's relatively dry, and we have a lot of topographic relief, we have thawing permafrost.

这里，山脉的北侧，相对干燥，起伏较大，永久冻土正融化。

And so what you can do is you can actually move point B and it is going to show you a different topographic profile.

你可以移动点B，它会显示不同的剖面图。

And so we have used topographic maps and topographic profiles as an analogy to understand how electric charge works in an electric field.

我们使图和剖面图作为类比来理解电场中电荷的工作原理。

So she's familiar enough with Utah's landscape that she bets she can narrow down the site by studying the photos from the DPS's Instagram post and comparing them to Google Maps topographic images.

她对犹他州的相当熟悉，因此她打赌，仅通过研究执法部门（DPS）Instagram帖子中的照片，并与谷歌图的图进行对比，就能缩小搜索范围。

Like, to the point that even as a kid, I remember going to a local bookstore and buying topographic maps, fine detail of the area I lived or the areas I was visiting, things like that.

就像，到了小时候我都会去当的书店买图，详细到我居住或访问区的每一处细节，诸如此类的东西。

Sadly, it was already in darkness by the time New Horizons was able to capture it, so the images  aren't quite as clear as those of Wright Mons, but you can see it here in this colourized topographic  map.

可悲的是， 当新视野号能够捕捉到它时， 它已经处于黑暗之中，所以图像并不像莱特蒙斯的图像那样清晰，但你可以这张彩色图中看到它。