名词
中文翻译：Unknown
同义词：
['alert', 'caution', 'signal例句：1. The traffic police issued a warning to the driver.（交通警察对司机发出了警告。）']
例句：
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1. The traffic police issued a warning to the driver.
交通警察对司机发出了警告。
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2.He gave me a warning that I should not go alone.
他给我一个警告，让我不要单独去。
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3. The company issued a warning about the safety hazards in the factory.
公司发布了关于工厂安全隐患的警告。