 |
| |||
| gently undulating (Alexander Demidov); gently rolling (twinkie) | |||
| gently-undulating | |||
slightly undulating (The territory is a slightly undulating plain.  cawater-info.net Zaytunam) | |||
| пологоволнистый: 5 phrases in 3 subjects |
| Construction | 1 |
| Geology | 3 |
| Hydrology | 1 |