n.路障；障碍
There was no sign of a roadblock. 那儿没有设置路障的迹象。
The police had set up a roadblock and waved several drivers down. 警方设下路障并挥手示意几位司机停车。
His car was swerved to avoid bumping against the roadblock. 为了避免撞上路障,他把车打了个急转弯。
Anytime they could set up a roadblock in our way. 他们随时都可能设置障碍来阻碍我们。
