1. 名詞
   umbra複數: (天文學日食、月食等的)本影
   (太陽黑子的)中央暗黑部
   陰影, 暗影
   蔭
   /此字義同"umbras"/
   

   同義字詞
   black,blackness,candlelight,dark,darkness,dusk,gloaming,gloom,murk,night,semidarkness,shade,shadows,twilight
   dusk,penumbra,shade,shadiness,shadow
   

例句

1. Because the Umbra is especially mutable, beings with different outlooks experience radically different Umbrae .
2. The invention of the magic lantern is often misattributed to Kircher, although he did conduct a study of the principles involved in his "Ars Magna Lucis et Umbrae ".
3. In 1646, Kircher published "Ars Magna Lucis et Umbrae ", on the subject of the display of images on a screen using an apparatus similar to the magic lantern as developed by Christiaan Huygens and others.