vt.

1. 防止，預防
   Vitamin C is supposed to prevent colds.

   維他命C被認為能預防感冒。

2. 阻止；制止；妨礙[（+from）]
   Who prevents their plans from being carried out?

   誰阻止他們的計畫，不讓實施？

   Of course I can't prevent your going.

   當然，我不能阻止你去。

3. 【古】先做；先去；先來

vi.

1. 妨礙；阻止

v.

1. keep from happening or arising.
   ▸make unable to do something.
2. archaic (of God) go before (someone) with spiritual guidance and help.