underpass

n (a) (section of a) road that goes under another road or a railway 高架桥下通道或路段（从另一条公路或铁路下方穿过的）. Cf 参看 overpass. (b) underground passage for pedestrians to cross below a road or railway 地下通道（供行人穿越道路或铁路的）. Cf 参看 subway 1.

undergird, undergo, undergraduate, underground, undergrowth, underhand, underhanded, underlay, underlie, underline, underling, underlying, undermanned, undermentioned, undermine, undermined, underneath, undernourished, undernourishment, underpants, underpay, underpin, underplay, underprivileged, underrate, underscore, undersea, underseal, undersell, undershirt, undershorts, underside, undersigned, undersized, underslung, undersold, understaffed, understand, understandable, understandably,