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sun pillar
释义
WordReference Random House Unabridged Dictionary of American English © 2024
sun
′
pil′lar,
[
Astron.
]
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. Cf.
moon pillar.
1900–05
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更新时间:2025/7/31 20:05:49