名词
中文翻译：过顶标志
同义词：
['overhead signal', 'overhead indicator']
例句：
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1.The overhead sign indicates that the train is coming.
过顶标志表明火车即将到来。
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2.The overhead sign helps to guide people to the correct path.
过顶标志有助于引导人们走向正确的路径。
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3. The overhead sign was a welcome sight for many commuters.
过顶标志是许多通勤者期待的景象。