俄罗斯和美国的宇宙飞船还发现了一些迹象，表明火星古代的气候可能更湿润、更凉爽，甚至可能更适合生命生存。
Russian and American spacecraft also found hints that its ancient climate might have been wetter, cooler, and possibly even friendly to life.
在气候特别湿润的年月里，平常干涸的河床下游可能会有水流动，因为地下水在那里位抬升到了地表以上。
In particularly wet years, short stretches of an otherwise dry stream-bed may have flowing water because the water table rises to intersect the land surface.
稀树草原气候的特征是干湿分明，干旱月份多于湿润月份。
Contrasting seasons of rain and drought characterize the savanna climate, typically with more dry months than wet.
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