名词
中文翻译：指示器
同义词：
['identifier', 'indicator', 'marker']
例句：
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1.The designator is a device used to identify objects or people.
指示器是一种用于识别物体或人的设备。
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2. The identifier was designed to help people find their way around the new building.
标识器被设计来帮助人们找到新建筑的路线。
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3. The marker was placed at the entrance of the museum to guide visitors.
标志被放置在博物馆入口处引导游客。