Craters of the moon is seismically active as well .

月亮岩浆陨石坑同时也是地震的活动区。

The astronauts gazed down upon the lunar craters , the first humans to see them from so close .

航天员们向下凝视着月球的环形火山口，这是人类首次从这样近的距离看到它们。

Many of the craters have been artificially created .

许多陨石坑是被人工创造的。

This computer graphic shows three craters in the eastern hellas region of mars , containing concealed glaciers that were detected by radar .

这幅电脑合成图展示出火星东部hellas区的三个弹坑，以及雷达探测到的隐蔽的冰河。

Researchers have long argued over whether the moon contains water on its surface - frozen in shadowy craters , for instance .

研究者们长期以来都在争执月球表面是否有水比如朦胧的环形山中冻结的水分。