名词
中文翻译：云
同义词：
['fog', 'mist', 'fog bank', 'vapor']
例句：
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1. The clouds are moving in quickly, making it hard to see the sun.
云正在快速移动，使得太阳难以看清。
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2. She enjoys watching the clouds as they drift across the sky.
她喜欢看着云朵在天空中飘过。
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3. The weather forecast predicts a cloudy day with temperatures in the mid-70s.
天气预报预测将会有阴天，温度在70多度。