in the event of something | in the event that something happens成語所屬單字eventin the event of something | in the event that something happensin the event of something | in the event that something happens — 慣用語慣用語1. If something happens.1.慣用語釋義如果發生…If something happens.例句In the event of a fire, leave the building immediately.In the event of rain, the concert will be indoors.