He saw a series of red arrows painted on the road.

他看见马路上画有一连串红色箭头。

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In the illustration, the red arrows represent the direction the segments are drawn.

图中的红色箭号代表区段绘制的方向。

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In the illustration, the red arrows represent the direction the segments are drawn.

图中的红色箭号代表区段绘制的方向。

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