1、
Is that why they're constructing so many underpasses, overpasses and highways?
那就是他们建这么多天桥 、 地下通道和公路的原因 吗 ?
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2、
Many pedestrians cross the road recklessly instead of using crosswalks or underpasses.
许多行人任意穿越马路,而不走斑马线或地下道.
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