beforehand
US /bɪˈfɔːr.hænd/
UK /bɪˈfɔː.hænd/
副词
事先, 预先
before an action or event; in advance
示例:
•
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。