英语语法分析

The clay deposits are scattered all over, in ancient volcanic surfaces and heavily cratered highland regions, some of which have apparently been exposed by erosion only recently.

粘土沉积分布在古代的火山表面和坑坑洼洼的高原地区，其中一些显然是最近才由于侵蚀而暴露出来的。

This close up of Dione reveals its cratered and fractured icy surface.

这张土卫四（Dione）的近距离特写照片展示了其坑坑洼洼支离破碎的冰冷表面。

Epimetheus, as pictured above, is actually well behind the heavily cratered Rhea.

土卫十一，在上图中，实际远远地在环形山密布的土卫五后面。