名词
中文翻译：标记
同义词：
['sign', 'mark', 'indicator例句：1. The policeman marked the crime scene with a blue marker.（警察用蓝笔在犯罪现场做了标记。）']
例句：
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1. The policeman marked the crime scene with a blue marker.
警察用蓝笔在犯罪现场做了标记。
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2.The company uses different markers to differentiate its products.
该公司使用不同的标记来区分其产品。
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3. The new signage has been added to improve traffic flow.
新的标识已经添加，以改善交通流量。