happen

US /ˈhæp.ən/
UK /ˈhæp.ən/
"happen" picture
1.

发生, 出现

occur; take place

:
The accident happened yesterday.
事故发生在昨天。
What will happen next?
接下来会发生什么?
2.

碰巧遇到, 偶然发现

find or come across by chance

:
I happened to be in town when she called.
她打电话时,我碰巧在城里。
If you happen to see him, tell him I said hello.
如果你碰巧见到他,告诉他我问好。