undulation
noun /ˌʌndʒəˈleɪʃn/
/ˌʌndʒəˈleɪʃn/
[countable, uncountable]- a smooth, curving shape or movement like a series of waves
波浪形;起伏;波动;荡漾 - The road followed the undulations of the landscape.
这条路沿着起伏的地形延伸。
- The road followed the undulations of the landscape.