umbra

基本解释

• n.影；本影；蚀时的地球

同根派生

• umbra相关词

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。

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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

• umbra剑桥字典
• umbra柯林斯字典