in the event of
https://gyazo.com/63586a936a5d0dffd9f2a065e45230d0
source: Infographic - How to react in the event of a terrorist attack? | Gouvernement.fr
in the event of ——
if —— happens: もし〜が起こるなら
〖条件〗 «…の/…という» 場合には «of/that節» (!主に公の文書で)
e.g. in the event of rain (that) it rains: 雨になった場合には
e.g. this will reduce the chance of serious injury in the event of an accident.: これが事故が起きた場合の深刻な怪我の可能性を減らすだろう。
#collocation