名词
中文翻译：Unknown
同义词：
['advance warning', 'early warning', 'precautionary measure']
例句：
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1. The government issued a prewarning about the impending storm.
政府发布了即将到来的暴风雨的预警。
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2. We need to take precautions to avoid any prewarning of an earthquake.
我们需要采取措施避免地震的预兆。
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3. The company has implemented several early warning systems to improve safety.
该公司已经实施了几个早期预警系统来提高安全性。