This is the 7812th most frequent Chinese word.
阻拦
"阻拦" means "to obstruct or prevent."
阻拦 refers to 'to obstruct a passage or movement', describing how the roadwork prevents the flow of vehicle traffic.
由于道路施工，车辆无法继续行驶，受到阻拦。
Due to road construction, the vehicles couldn't continue traveling and were obstructed.
阻拦 is used here to mean 'to prevent' or 'to stop something from happening', applied to thwarting an attempted robbery.
警方成功阻拦了一次银行抢劫行动。
The police successfully prevented a bank robbery.
In this sentence, 阻拦 is used to mean 'to obstruct' or 'to block someone's action', indicating physical or situational prevention.