The two NASA probes have flown close to the lunar surface, producing a high resolution gravity map of the Moon.

美国宇航局的这两辆探测器飞临月球表面，绘制高分辨率月球重力分布图。

Scientists are able to measure the distance between these satellites to the width of a human hair in order to reconstruct a gravity map of our entire planet.

为了拥有地球完整的重力资料，科学家可以测量这两颗卫星间的距离精确到人的头发宽度。