| 1 | Don't be surprised if what you feel is rough and bumpy . | |
| 2 | The car jolted us badly over the rough road. | |
| 3 | One hot and humid day, I decided to mow our extremely hilly lawn. | |
| 4 | It is hard to quantify the roughness of rock fractures with commonly used function because rock fracture surfaces are rough. | |
| 5 | Snow and ice are white, but debris or rough surface can change it into a grey tone. |