umbra

常见例句

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。