单词盒子

umbra

U 开头单词

基本解释

  • n.影；本影；蚀时的地球

同根派生

     

英汉例句

    用作名词 (n.)

  • This includes the continuous survey of umbra and penumbra of the sunspot.
    这包括对太阳黑子本影和半影持续的观测。
  • It is the custom that aged or infirm Striders make a final journey into the Umbra, never to return.
    年老或者衰弱的漫游者会根据传统最后一次出发去影界，一去不归。
  • This is a lighter area between the umbra and the edge of a shadow.
    这是本影和阴影边缘之间较亮的区域。
  • Shaped like a cone extending into space, the umbra has a circular cross section that can be most easily seen during a lunar eclipse.
    本影就像一个圆锥一样延伸在空间中，当月食发生时，它很容易被看到。

英英字典

    剑桥英英字典

  • the dark inner part of a shadow in which all light is blocked, used especially about a shadow made during an eclipse