topography

地形学英释中释nthe science of describing an area of land, or making maps of it

1 surface topography,表面形貌学

2 karst topography,岩溶地形；岩溶地势；喀斯特地形

1 The topography of the river's basin has changed significantly since the floods..洪水过后，这条河的流域地形已经明显改变了。