The sudden occurrence of rain caught everyone by surprise
The police are investigating the recent occurrence of burglaries in the neighborhood
The report detailed the various occurrences of fraud within the company
The doctor noted the unusual occurrence of the symptoms
The rare occurrence of a solar eclipse fascinated the observers
I've been trying to understand the recent spike in website traffic, and I'm stumped.
Oh, that's interesting! Any idea what's causing it? We saw a similar *occurrence* last quarter.
Were there any specific promotions or changes around the time of that past spike, or was it a completely mysterious phenomenon?
The unexpected occurrence of rain ruined the picnic
The fact that it rained unexpectedly ruined the picnic
The rain, which was unforeseen, spoiled the picnic
The sudden downpour messed up the picnic plans
The picnic was ruined due to the rain that nobody expected