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单词 Roll Cloud
释义

Roll Cloud

原声例句
暮光之城:暮色

He took a deep breath and stared through the windshield at the thick, rolling clouds that seemed to press down, almost within reach.

他深吸了一口气,向挡风玻璃外看去,注视着那片涌动着的浓云,它似乎要压下来了,几近伸手可及。

中文百科

弧状云 Arcus cloud

(重定向自Roll Cloud)
出现在荷兰的滩云
出现在乌拉圭的卷轴云

弧状云(arcus cloud),是一种罕见的云层。通常会形成于冷锋之前缘,一旦寒冷的气流扩展开来,会推升前方的暖空气,气流有时会沿着水平轴方向流动。弧状云又可分为卷轴云(Roll clouds)和滩云(Shelf clouds)。滩云有时会造成龙卷风。

英语百科

Arcus cloud 弧状云

(重定向自Roll Cloud)
A time-lapse photography of shelf cloud just before a thunderstorm at Pondicherry
A shelf cloud over Enschede, Netherlands
A roll cloud associated with a severe thunderstorm over Racine, Wisconsin, United StatesCoastal roll cloud in Uruguay

An arcus cloud is a low, horizontal cloud formation. Roll clouds and shelf clouds are the two types of arcus clouds. A shelf cloud is usually associated with the leading edge of thunderstorm outflow; roll clouds are usually formed by outflows of cold air from sea breezes or cold fronts in the absence of thunderstorms.

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更新时间:2025/6/21 18:25:37