起伏的

fluctuant; rolling; undulant; undulate; undulatory; up-and-down

1. 砂丘相对平坦或有波状起伏的覆草沙地，通常在海岸边
   Relatively flat or undulating sandy turf-covered ground usually along a seashore.
2. 起伏的山丘逐渐向海岸缓降
   The rolling hills fall gently toward the coast.
3. 该市为平缓起伏的丘陵所围绕着。
   The city is girdled about with gently rolling hills.
4. 大草原多为广阔而无树木的平坦或起伏的草原区域，尤指北美洲中部的大平原
   An extensive area of flat or rolling, predominantly treeless grassland, especially the large tract or plain of central North America.

起的英语翻译：

伏的英语翻译：