beforehand

US /bɪˈfɔːr.hænd/

UK /bɪˈfɔːr.hænd/

1.

事先, 预先

before an action or event; in advance

:

•

I wish I had known beforehand.

我希望我事先知道。

•

You should prepare everything beforehand.

你应该事先准备好一切。

:

in advance earlier previously ahead of time prior to