罗伯茨花费很多工作时间来整理检点数据，以此作为该研究的基础。
Roberts has spent much of his working life collating the data on which the study was based.
如果我们回想一下我们一开始讲过的数据对象的种类，浮点数，整数，字符串，它们实际上有相同的行为方式。
If we go back up to the kinds of data objects we started with, floats, ints, strings, they actually behave the same way.
他们可以为士兵提供一张可以显示即时地点数据的现场虚拟地图。
They can gather around a virtual map of the battlefield with live location data for their troops.
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