你知道Google地球的前身，那个流行的名为Keyhole的三维地球浏览器吗？
Did you know that before it was known as Google Earth, the popular 3d globe viewer was named Keyhole?
2004年，美国的航天部门NASA，发布了另一个“地球浏览器”，名叫World Wind。
In 2004 America's spaceagency, NASA, released another geobrowser, called World Wind.
Galdos Systems（一家擅长整合城市地理数据的公司）的罗恩雷克说，地球浏览器带来的冲击使得公众更好的访问这类数据。
Ron Lake of Galdos Systems, a firm thatspecialises in integrating civic geodata, says geobrowsers have led to a pushfor better public access to such data.
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