Mimas, at the upper right, has an enormous impact crater on one side, and Tethys, at the bottom, has a huge rift zone called Ithaca Chasma that runs nearly three-quarters of the way around the moon.
右上角的是土卫一，在它上面的一边上，有着一个巨大陨石坑；底部的是土卫三，上面有一个巨大的、称为伊萨卡峡谷的裂谷带，它几乎占了该卫星绕行路线的四分之三。
youdao