vi.

1. 勝過，戰勝，優勝[（+over/against）]
   Good will prevail over evil.

   善良將戰勝邪惡。

   His argument prevailed and I yielded.

   他的論點佔了上風，我讓步了。

2. 流行，盛行；普遍[（+among/in）]
   This custom prevails over the whole area.

   這一習俗在整個地區盛行。

v.

1. prove more powerful or superior.
   ▸be widespread or current.
2. (prevail on/upon) persuade to do something.