名词
中文翻译：标记区域
同义词：
['marking zone', 'demarcation zone', 'boundary zone']
例句：
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1. The marker zone has been carefully marked to indicate the safe area.
标记区已经仔细标出，以指示安全区域。
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2. The demarcation of the marker zone is crucial for the safety of the construction workers.
标记区的划分对于施工工人的安全至关重要。
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3. The boundary zone between the two countries is often a source of dispute.
两国之间的边界区域往往是争议的源头。