rolling ground

例句：

1. 1.The car rolled down the hillside.
   汽车沿着山坡滚了下去。
2. 2. The team is rolling up the field for a play.
   队伍正在球场上滚动准备比赛。
3. 3. The roller coaster rides over the rolling terrain.
   过山车在起伏的地形上行驶。