使用遥感技术定期扫描庄稼地好比是全身体检，能迅速收集关于降雨、土地温度乃至地下水位的信息，而用常规手段收集这些数据需要几个月之久。
Regular sweeps over cropped areas using remote sensing – something like a full-body health scan – can quickly gather information on rainfall, land temperature, and even groundwater levels that would otherwise take months to obtain.