名词
中文翻译：云层
同义词：
['cumulus', 'cirrus', 'cumulonimbus']
例句：
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1.The weather forecast shows a clear sky with cirro-cumulus clouds.
天气预报显示天空晴朗，有卷云和积云。
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2. The meteorologists are studying the formation of cirro-cumulus clouds.
气象学家正在研究卷云和积云的形成。
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3. During the night, the cirro-cumulus clouds can be seen in the sky.
夜晚，可以看见天空中的卷云和积云。