contour lines
outline shape
topography
A: Did you study the contours of the landscape?
A：你研究过地貌的轮廓了吗？
B: Yes, it is fascinating.
B：是的，很有趣。
1) 轮廓，外形
2) 等高线
3) 曲线
1. 轮廓；外形
noun
1. The outline or shape of something.
Synonym: outline, profile, shape