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，而在他身后，我们看到了一个看似发黑的月壳地形模型。

And so this would be a topographic map essentially.

这基本上就是一张地形图。

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

就你可以利用地形特征来做很多事情。

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，所以图并不莱特蒙斯的图那样清晰，但你可以在这张彩色地形图中看到它。

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.

她对犹他州的地形相当熟悉，因此她打赌，仅通执法部门（DPS）Instagram帖子中的照片，并与谷歌地图的地形图进行对比，就能缩小搜索范围。

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.

在这里，山脉的北侧，相对干燥，地形起伏较大，永久冻土正在融化。

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，因为你可以用地形图和离线地图。

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

总而言之， 就地理而言，美国有四个可识别和可定义的地形区域。

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

这将给你这个小山的地形剖面。

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，到了小时候我都会去当地的书店买地形图，详细到我居住或访问地区的每一处细节，诸如此类的东西。

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

地形和生态障碍在某些大陆上比在其他大陆上更为明显，是当地传播的重要障碍。

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

在地形图上，这些等高线会显示相同高度的区域。

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

就在地形图上找到两个不同区域的高度一样。

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

但是你可以绘制地形剖面。

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

我们使用地形图和地形剖面图作为类比来理解电场中电荷的工作原理。

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，它会显示不同的地形剖面图。

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

所以在地形图上，这是重力势能。

So this a three dimensional map of this topographic map.

所以这是一个地形图的三维地图。

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

在地形图上，你经常会看到所谓的等高线间隔。