This is what the map of Tandale looked like in August, 2011. But within a few weeks, university students were able to use mobile phones and an open-source platform to dramatically map the entire community infrastructure.
这是Tandale地图在2011年8月看起来的样子， 但是在几个星期之内， 大学学生成功地运用手机 和一个开放资源平台来详细地刻画出 这整个区域的基础设施。