Regardless, these geographic drawings and all other maps based on scientific calculation are his legacy.

不管怎样，这些经过科学计算的地理绘图和其它地图都是他留给后人的宝贵财富。

They are expected to provide better base maps for scientists and engineers around the world to facilitate their research and planning for future expeditions to Mars, the administration said.

国家航天局表示，这将为开展火星探测工程和火星科学研究提供质量更好的基础底图，也将为人类深入认知火星作出贡献。

People living and working in the places we're mapping take that base map and color it in, for example, identifying: Is this building a school or a hospital?

在我们绘制地图的地方生活和工作的人们拿走那张底图并为其着色，例如，识别：这栋建筑是学校还是医院？

In this clip, we stratified the map that I've showed you based on the year of births of individuals from 1400 to 1900, and we compared it to known migration events.

在此剪辑中，我们根据 1400 年到 1900 年个人的出生年份对我向您展示的地图进行了分层， 并将其与已知的迁移事件进行了比较。