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1.The train station has a clear station signalto guide passengers.
火车站有一个清晰的站牌来引导乘客。
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2. The engineer needs to checkthe station signal before starting the engine.
工程师在启动引擎之前需要检查站牌信号。
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3. The station signal is essential for ensuringsafe travel.
站牌信号对于确保安全旅行至关重要。