1. 地形学;地形测量学
Topography is the study and description of the physical features of an area, for example its hills, valleys, or rivers, or the representation of these features on maps.

2. 地形；地貌；地势
The topography of a particular area is its physical shape, including its hills, valleys, and rivers.

1. the configuration of a surface and the relations among its man-made and natural features

2. precise detailed study of the surface features of a region