underpass

n.

地下通道；

复数：underpasses

1. Don't walk across the street,it's safer to take the underpass.
   不要穿越马路，从地下道走比较安全。

Underpass luminaire
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Method for constructing a tunnel or underpass
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Interaction of twin tunnels and shallow foundation at Zand underpass, Shiraz metro, Iran
Florida Key deer Odocoileus virginianus clavium underpass use and movements along a highway corridor
Distribution, Relative abundance, and Roadway Underpass Responses of Carnivores Throughout the Puente-Chino Hills