The picture is a sign for an unmanned level crossing.
图中是无人看守铁路道口标志。
When passing an unmanned level crossing, the driver may speed up and pass if he sees no train is coming.
通过无人看守的铁路道口时，没有看到火车到来可以加速通过。
When passing an unmanned level crossing, the driver may speed up and pass if he sees no train is coming.
通过无人看守的铁路道口时，没有看到火车到来可以加速通过。
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