名词
中文翻译：云层
同义词：
['cirrus', 'cirrus stratus']
例句：
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1.The sunrise over the ocean was breathtakingly beautiful.
海上日出令人叹为观止的美丽。
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2.Cirrus clouds are often associated with storms in the tropics.
卷云通常与热带风暴有关。
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3.As the sun rose, the sky was filled with cirrus stratus.
随着太阳升起，天空被卷云覆盖。