vi.

1. （偶然）发生
   A funny thing happened.

   发生了一件好笑的事。

2. 碰巧[W][+to-v]
   I happened to sit by her in the cinema.

   在电影院我碰巧坐在她旁边。

3. 【美】碰巧来（或去）；偶然出现[（+by/past/in/into）]

v.

1. take place; occur.
2. come about by chance.
   ▸chance to do something or come about.
   ▸ (happen on) come across by chance.
   ▸used as a polite formula in questions:

   do you happen to know who her doctor is?
3. (happen to) be experienced by; befall.
   ▸become of.

adv.