in the event of

US /ɪn ði ɪˈvent ʌv/
UK /ɪn ði ɪˈvent ʌv/
"in the event of" picture
1.

如果發生, 萬一

if a particular thing happens

:
In the event of a fire, use the stairs.
如果發生火災,請使用樓梯。
You will be notified in the event of any changes.
如果發生任何變化,您將收到通知。