“沙丘”怎么读？

那男孩光着脚在沙丘间飞跑.The boy galloped over the dunes barefoot.沙积集起来成了沙丘.The sand massed to form a dune.在这里，巨大的沙丘向四面八方延绵不绝，一望无垠。Here, massive dunes stretched in every direction as far as the eye could see....

“沙丘”的英语可以翻译为：sand dune，dune，downsand，tibba，dene...