He included detailed drawings of maps,creatures,rulers, and even talking plants to help capture this imaginary world.

VOA: special.2010.04.14

And last year to did we hand students Google maps, Google news, asked them to mash those two very familiar real world products together so that they had a map of the United States, little markers sprinkled throughout, that indicated exactly where there were current events going on.

去年我们给学生提供了谷歌地图和谷歌新闻，要求他们把这两个熟悉的实时世界,产品结合到一起，这样他们就有了一个美国地图,上面到处都是一些小图标，它们能够精确地标记出,当前事件发生的地方。

哈佛公开课 - 计算机科学课程节选

Most maps of the world show lines that are not on the Earth's surface.

VOA: special.2010.07.14