名词
中文翻译：紧急任务
同义词：
['urgent duty', 'emergency service']
例句：
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1.He is assigned to emergency duty during the storm.
他在暴风雨期间被指派了紧急任务。
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2.The fire department was called to provide emergency duty during the fire.
消防部门被召来提供紧急服务，以应对火灾。
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3.She volunteered for emergency duty in the disaster area.
她自愿在灾区提供紧急服务。