他，作为古典时期的最后一位伟大的科学家，以当时的知识水平为基础，而不是凭猜测或想象，是绘制出地图的第一个人。
The last great scientist of the classical period, he was the first to draw a map that was based on all available knowledge, rather than guess or imagination.
在这个过程中，机器人没有外部环境先验知识的帮助，地图建模与定位都依赖于自身的传感器。
In this process, the robot has no help of prior knowledge of the environment, and achieving localization and mapping with its onboard sensors.
调查显示，美国年轻人的世界地理知识相当贫乏，大多数人在地图上找不到伊拉克的位置，四分之三的人不知道印度尼西亚在哪里。
Young Americans know little about world geography, with the majority unable to locate Iraq on a map and three quarters unable to find Indonesia, according to a study.
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