The light is resolved by prisms, gratings, or by an interferometer.光线用棱镜 、 光栅或干涉仪分解.Many of the roofs were so full of holes that they looked like gratings.许多屋顶千穿百孔,象筛子一样.All gratings shall lie flat with no tendency to ro...
He is an elderly gentleman who had had a cataract operation.他是一位曾经动过白内障手术的老人.The way is blocked by the tall cataract.高悬的大瀑布挡住了去路.Age is not a factor in cataract surgery.年龄并不是影响做白内障手术的因素。...