pith-ray fleck

例句：

1. 1.The pale flecks on the stone indicate that it has been polished by abrasive materials.
   石头上的淡色斑表明它曾被磨光材料打磨过。
2. 2.The artist's brushstrokes created a subtle veining pattern across the canvas.
   艺术家的笔触在画布上创造了一种细微的条纹图案。
3. 3. The scientist observed the faint flecks of light in the dark room, trying to determine their source.
   科学家在黑暗的房间中观察微弱的光斑，试图确定它们的来源。