As soon as she had said this she realized that the great silvery expanse which she had been seeing (without noticing) for some time was really the sand on the sea-bed and that ail sorts of darker or brighter patches were not lights and shadows on the surface but real things on the bottom.
她说完这句话，心里已明白自己不知不觉一直看了好一阵子的那一大片粼粼银光实际上是海底的沙滩，各种深一片淡一片的不是海面上的光影，而是水底的实物。