火星表面 Martian surface
- 火星表面的引力大约是地球表面引力的三分之一。
The gravity on the surface of Mars is about one third as strong as it is on earth. - 我们都已经见过火星表面的图像,上面显现着山峦和峡谷。
We've all seen earlier images of the Mars surface, which show valleys and canyons. - 美国国家航空和宇宙航行局的科学家们相信,目前在火星表面有水。
There is currently water on the surface of Mars, Nasa scientists believe.
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