是curb不是kerb
A curb (US English), or kerb (UK English), is the edge where a raised pavement/sidewalk/footpath, road median/central reservation, or road shoulder/hard shoulder meets an unraised street or other roadway.
-------From wiki
所以才说： 你瞅啥阿？楼主百度一下 然后+东北 你就知道了~