roadblock
/ˈrəʊdblɒk/noun
1- a barrier or barricade on a road, especially one set up by the authorities to stop and examine traffic（尤指政府为检查车辆设置的）路障; 关卡; 道路障碍。
1.1
- US a hindrance or obstruction〈美〉妨碍; 障碍：
the tax has become a roadblock against investment incentives.
这项税收成了影响投资积极性的一个障碍。