Geology, the science of the earth, tells us about the world, what it is made of, its age, its aging proceses, its landforms, and its abyssal ocean depths.

• 地质学这门研究地球的学科告诉我们有关本星球的情况：它的组成、年龄、地形、与时俱来的种种变迁以及海底深渊。（省略后三个物主代词）