vt.

1. （以法令，规定等）禁止[（+from）]
   Smoking is prohibited in the office building.

   办公楼内禁止抽烟。

2. 妨碍，阻止；使不可能[（+from）][+v-ing]
   The high cost of the machine prohibits its widespread use.

   这机器价格昂贵，很难普及使用。

v.

1. formally forbid by law, rule, etc.
2. prevent.