Photo Gallery: Clouds Fluffy altocumulus undulatus clouds stain the sky red above a row of trees.
云彩的图片画廊。蓬松的高积云波状云染色天空呈红色在一排树木的上面。
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Dubbed undulatus asperatus (turbulent undulation), the atmospheric anomaly could be headed where only 80-odd clouds have gone before: into the International Cloud Atlas.