fold abrasion mountain褶皱山
fold mountain system褶皱山系
fold mountain belts褶曲山脉带
old d fold mountain古褶皱山脉
block-fold mountain地块褶曲山块褶山地
fold mountain range褶皱山脉
young g fold mountain幼年褶皱山脉;新褶曲山脉
young fold mountain新褶曲山脉;幼年褶皱山脉
old fold mountain古褶曲山脉;古褶皱山脉;褶曲山脉