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On the other side, this system is different from the normal railway crossing alarm device.
另一方面，系统有别于常规的铁路道口报警装置。
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Crossing is the junction and the key position of road system.
交叉口是道路网的节点和枢纽。
youdao
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Crossing is the junction and the key position of road system.
交叉口是道路网的节点和枢纽。
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