an organized action to stop people or goods from leaving or entering a particular place, often as a form of protest 封锁◆Truck drivers have begun a blockade of oil depots to protest against high fuel prices. 卡车司机已经开始封锁油库，以抗议燃料价格上涨。⨁to impose / lift a blockade 实行／解除封锁
a barrier that stops people or vehicles entering or leaving a place 障碍物；屏障