名词
中文翻译：出发指示器
同义词：
['departure indicator', 'departure sign', 'departure signal']
例句：
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1. The flight attendant displayed the departure indication on the plane's overhead display.
空乘人员在飞机的机舱顶部显示屏上展示了出发指示。
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2. The new airport has a departure indication system that helps travelers find their way around the terminal.
新机场有一个出发指示系统，帮助旅客找到他们去航站楼的路。
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3. The train had a departure indication board that showed the next stop and estimated time of arrival.
火车有一个出发指示牌，显示了下一站和预计到达时间。