For example, the analysis does not track changes over time in the areas being farmed, using instead a crop map from around 2000.
例如，这一分析没有追踪现已被耕种地区的产量随时间的变化，反而使用的是2000年前后的作物分布图。
These images will be used to map territory and help with city planning. The pictures can also provide valuable information about crop and land conditions, and assist in disaster relief efforts.
这些图片将用于勘测地貌和协助城市规划，还能提供关于农作物和土地状况的有价值信息，并协助救灾工作。
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