Researchers examined radar measurements by NASA's Lunar Reconnaissance Orbiter, and compared the results with lava tubes on Earth.

研究人员检查了美国航空航天局月球轨道勘测器的雷达测量结果，并将结果与地球上的熔岩洞进行了比较。

They were combining radar measurements, satellite information, and snow accumulation data, and they say this allowed them to locate a valley that's hidden underneath the ice sheet.

综合了雷达勘测数据、卫星信息和积雪数据，他们找到了一个隐藏在冰盖下的峡谷。