名词
中文翻译：指示器鼓
同义词：
['indicator drum', 'indicator drum', 'indicator drum']
例句：
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1. The indicator drumis used to indicate the start of a new project.
指示器鼓用于指示新项目的开始。
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2. The indicator drum was used to signal the end of the meeting.
指示器鼓用于标示会议结束的信号。
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3.The indicator drum was used to show the progress of the construction project.
指示器鼓用于显示建筑项目进度。