biogenic landforms生物成地形
positive landforms正地形
erosion landforms侵蚀地形
Custer landforms卡斯特地貌
Galcial Landforms冰积地形
concave landforms凹形地貌
negative landforms负地貌
landforms characteristics地貌特征
geography landforms地理地貌
N-COUNT（可数名词） A landform is any natural feature of the Earth's surface, such as a hill, a lake, or a beach. 地貌; 地形
This small country has an amazing variety of landforms.
这个小国家拥有令人惊叹的丰富的地貌类型。