n.

1. 封锁；道路阻塞
   A blockade of all the harbors of that country would require thousands of war-ships.

   封锁那个国家的所有港口需要成千上万艘战舰。

2. 障碍物，阻碍物[（+to）]

vt.

1. 封锁
   The ships blockaded the port.

   军舰封锁了那个港口。

2. 阻塞；挡住
   The river blockaded the spread of the forest fire.

   那条河阻止了森林大火的蔓延。

n.

1. an act of sealing off a place to prevent goods or people from entering or leaving.
2. an obstruction of a biochemical or other physiological function.

v.