名词
中文翻译：Unknown
同义词：
['sign', 'signal', 'beacon', 'indicator']
例句：
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1. The police used a flashing light as a signal to stop the traffic.
警察使用一个闪烁的灯光作为停止交通的信号。
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2. The ship's radio was a beacon in the dark night.
那艘船的无线电是一个在黑暗夜晚中的灯塔。
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3. The new sign outside the store is very eye-catching.
商店外面的新标志非常吸引人。