The picture is a sign for an unmanned level crossing.

图中是无人看守铁路道口标志。

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The dog is walking down the street, when he comes to a level crossing.

狗狗沿着街道走到了一个十字路口。

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The dog is walking down the street, when he comes to a level crossing.

狗狗沿着街道走到了一个十字路口。

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