名词短语
中文翻译：烟雾警报
同义词：
['smoke alert', 'air quality alert']
例句：
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1.The city issued a smog alert yesterday due to heavy pollution.
由于严重的污染，该市昨天发布了烟雾警报。
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2.The children were told to stay indoors during the smog alert.
在烟雾警报期间，孩子们被告知待在室内。
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3.The air quality in this area has been deteriorating due to the smog alert.
由于烟雾警报，该地区的空气质量一直在恶化。