Scientists have long suspected that some form of water ice survives inside deep craters near the lunar poles. 长期以来，科学家大都认为，月球两极附近深邃的陨石坑储存某种形式的水冰。
Storms such as this lift dust particles high above Mars' surface, where water ice condenses onto them, forming wispy white clouds. 类似这样的风暴将尘埃颗粒卷到火星地表上空，由于水冰凝结在尘粒上，便形成了我们在图片中看到的纤细的白云。
