It is mapping the surface of Mars from an altitude of 300km from the safety of the Mars Orbiter - and has even taken 3d pictures of the surface of the planet.
它从高度300km的火星人造卫星上绘制出火星表面的图像,它曾经还绘制出这个星球表面的3d图片。
This image was generated the by Mars Orbiter Laser Altimeter, or MOLA, an instrument that was aboard NASA's Mars Global Surveyor.