umbra
英 [ˈʌmbrə] 美 [ˈʌmbrə]

n.

本影，暗影，蚀时的地球；

变形

复数：umbrasumbrae

英英释义

umbra[ 'ʌmbrə ]

• n.a region of complete shadow resulting from total obstruction of light

双语例句

用作名词(n.)

1. 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。
2. 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。
3. 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。
4. 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。

权威例句

Umbra: efficient and scalable memory shadowing
Magneto-convection in a sunspot umbra
Ecology of the arboreal tropidurid lizard Tropidurus (=Plica) umbra in the Amazon region
The interaction of electrons in the optical umbra of Venus with the planetary atmosphere - The origin of the nighttime ionosphere
Cytogenetic effects on the eastern mudminnow, Umbra pygmaea , exposed to ethyl methanesulfonate, benzo[ a ]pyrene, and river water
Infrared lines as probes of solar magnetic features. XI. Structure of a sunspot umbra with a light bridge.
Can Seismic Waves Be Trapped inside an Inactive Fault Zone? The Case Study of Nocera Umbra, Central Italy
Survival mechanisms of the central mudminnow ( Umbra limi ), fathead minnow ( Pimephales promelas ) and brook stickleback ( Culaea i...
Induction of micronuclei and nuclear abnormalities in the erythrocytes of mudminnows ( Umbra limi ) and brown bullheads ( Ictalurus ...
Induction of nuclear anomalies (micronuclei) in the peripheral blood erythrocytes of the eastern mudminnow Umbra pygmaea by ethyl m...