Geomorphology deals with the origin of landscapes and changes in them . 地貌学研究地形的成因及其变化。
The situation may be further complicated by the effect of rain and of irregularities in the terrain . 雨的影响以及复杂地形的影响等都可能使情况更加复杂。
Volcanic activity has been responsible for large chunks of surface morphology in the western states, alaska, and hawaii . 火山活动是形成美国西部各州,阿拉斯加州和夏威夷州大片地形的主要原因。
The names of the various lunar formations and lunar landscapes mostly date back to the early history of visual lunar observation . 各种月面结构物和地形的名称,大都起源于月球目测观测史的早期。
The vertical extent of this layer in strong winds depends mainly on the roughness of the underlying terrain, but is usually many hundreds of feet . 强风产生的该层厚度主要与地形的粗糙程度有关,通常有好几百英尺。