guidepost
US /ˈɡaɪd.poʊst/
UK /ˈɡaɪd.poʊst/
1.
指路牌
a pole at the side of a road, especially at a point where two or more roads meet, that gives information about places where the road goes and distances to them:
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My bike wobbled all over the road, but fortunately I missed all the trees and guideposts and managed not to fall off.