speckle       
noun [ C usually plural ] uk/ˈspek.əl/ us/ˈspek.əl/
 (表面上的)斑点,色斑
a very small mark of a different colour from the area around it, usually found with a large number of other marks of the same type
  A blackbird's egg is blue with brown speckles on it. 乌鸫的蛋是蓝色的,上面有棕色的斑点。 
 Synonyms: fleckpatch spot