名词
中文翻译：Unknown
同义词：
['dangerous area', 'hazardous area', 'risky area']
例句：
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1. The firefighters were calledto the danger area immediately after the explosion.
消防员被紧急召至爆炸后的危险区域。
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2. The construction workers were warned tostay away from the dangerous area.
建筑工人被警告远离危险区域。
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3. Theaccident occurred in a dangerousarea where there was no warningsign.
事故发生在没有警示标志的危险区域。