名词
中文翻译：云层
同义词：
['cloud cover', 'cloud formation', 'cloud base']
例句：
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1. The weather forecastindicated a clear sky with a slight cloud layer.
天气预报显示天空晴朗，有轻微的云层。
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2. The scientist conducted experiments to study the behavior of clouds in different layers.
科学家进行了实验，研究不同层次的云的行为。
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3. During the rainy season, we often see the cloud layer rising from the ground.
雨季时，我们经常看到云层从地面升起。