a band of colours, as seen in a rainbow, produced by separation of the components of light by their different degrees of refraction according to wavelength.
used to classify something in terms of its position on a scale between two extreme points.
There are wide range of spectrum for the ideas.
【このカテゴリーの最新記事】
-
no image
-
no image
-
no image
-
no image
-
no image
