dunen. 沙丘學術名詞沙丘：生態學、地理學、海事、海洋地質學、高中地理學、地質學砂丘：力學、林學、水利工程學沙堆：海洋地質學、地質學英文釋義a ridge of sand created by the wind; found in deserts or near lakes and oceans