spectrum/ˈspek.trəm/名词光谱;波谱;声谱;频谱The colours of the spectrum - red, orange, yellow, green, blue, indigo, and violet - can be seen in a rainbow.光谱中的红、橙、黄、绿、蓝、靛、紫诸色都可以在彩虹中见到。(看法、感觉等的)范围,各层次the autism spectrum自闭症谱系想跟读,去练习