Archaeologists used advanced ground penetrating radar, GPR, which helped them scan the town at different depths.

考古学家使用先进的探地雷达（GPR），帮助他们在不同深度扫描城镇。

GPR has major implications for archaeologists who study ancient cities that cannot be excavated because of modern structures.

探地雷达对于研究因现代结构而无法挖掘的古城的考古学家具有重大意义。

He and colleagues used ground-penetrating radar (GPR) to detect invisible traces of footsteps in White Sands National Monument in New Mexico.

他和同事使用探地雷达 (GPR) 检测新墨西哥州白沙国家纪念碑中看不见的足迹。