名词
中文翻译：紧急电话线
同义词：
['emergency service line', 'emergency contact line', 'emergency assistance line']
例句：
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1. We need to call the emergency line immediately if there is an accident.
如果有事故，我们需要立即拨打紧急电话。
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2. The doctor advised us to use the emergency line if we were in danger.
如果处于危险中，医生建议我们使用紧急电话。
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3. The police dispatcher informed us that the emergency line was busy with calls about the fire.
警方调度员告诉我们，紧急电话线正忙于处理关于火灾的呼叫。