Where the Duke pointed, crescent dune tracks spread shadow ripples toward the horizon and, running through them as a level line stretching into the distance, came an elongated mount-in-motion—a cresting of sand.

在公爵所指的地方， 新月形的沙丘轨迹向地平线散布阴影涟漪，穿过它们作为一条延伸到远处的水平线， 出现了一个细长的运动山——沙顶。