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单词 sun pillar
释义

sun pillar in American English

noun
Astronomy
a halo phenomenon in which a vertical streak of light appears above and below the sun, believed to be caused by the reflection of sunlight by ice crystals with vertical axes
Compare moon pillar
Word origin
[1900–05]

Examples of 'sun pillar' in a sentence
sun pillar

One explanation for these sightings is the rare atmospheric phenomenon of a halo and a sun pillar.Winter is often the best time to see a sun pillar because it needs freezing air.A combined halo and sun pillar can create the shape of a cross in the sky.
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更新时间:2025/1/23 23:46:11