vt.

1. 禁止，不许[O1][O2][+v-ing]
   The new law forbids smoking in offices.

   新法律禁止在办公室抽烟。

   Their father forbade them to go.

   他们的父亲禁止他们去。

2. 阻止，妨碍[O2]
   The typhoon forbade sea voyages.

   台风来了，无法航海。

v.

1. refuse to allow.
   ▸order not to do.
2. make impossible; prevent:
   the cliffs forbid any easy turning movement.
3. [as adj. forbidden] Physics  (of a quantum transition) contrary to a selection rule.