lightn.光；光线；灯；打火机；领悟；浅色；天窗adj.轻的；浅色的；明亮的；轻松的；容易的；清淡的v.点燃；变亮；照亮adv.清楚地；轻便地light list航行灯表

1. Molecules around stars leave imprints in their light, which the spectrograph can detect.
   恒星中的分子会在光谱中留下特殊标识，通过摄谱仪就能识别。