柯林斯词典dune /djuːn/ (dunes) 1. N-COUNT A dune is a hill of sand near the ocean or in a desert. 沙丘 Large dunes make access to the beach difficult in places. 在有些地方大沙丘使得靠近海灘很難。 返回 dune剑桥词典a hill of sand near a beach or in a desert (海灘或沙漠的)沙丘 返回 dune