机遇号对于火星地理结构的解读总是揭示出一个存在于远古火星的，来自于海洋性酸股介水坑的废弃风沙之地。
The geologic story the Opportunity read there always spoke of an ancient martian wasteland of windblown dunes pocked by the occasional acid-laced puddle.
这个重达240公斤的机器人被送入天空，用于勘测火星的地形、地理状况，以及水、冰、环境和其他物理场的有关情况。
The 240-kilogram robot was sent into the sky to survey Mars' landforms, geography situation, and something about water, ice, environment and other physical fields.
根据两位科学家现在的估测，地球和火星之间巨大的地理性差异可能是因为在太阳系形成后，火星的成长史只有短短的二百万到四百万年。
Profound differences in the geologies of Earth and Mars might stem -as two scientists are now suggesting -from Mars' developing only two to four million years after the birth of our solar system.
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