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Discover LudwigSuggestions(1)
The phrase "a occurred when" is not correct in English.
It seems to be a fragment and lacks clarity without additional context.
Example: "An error occurred when the system crashed unexpectedly."
Alternatives: "An event happened when" or "A situation arose when."
Similar(59)
Pandemics of influenza A occur when a major change occurs in the proteins of circulating strains of the virus.
According to Bonilla, his maturation as a Met occurred when a newspaper cartoon had him wearing a diaper.
A signal occurred when the parameter exceeded the threshold value.
Finally, a procedural complication occurred when a patient experienced adverse consequences of a procedure.
A false positive occurred when a non-TFBS item was predicted as a TFBS one.
Later that night, a similar incident occurred when a white van plowed through protesters blocking traffic.
Such an event occurred when Saʿūd, king of Saudi Arabia, was dethroned in 1964.
A crucial event occurred when she was fifteen.
A disquieting incident occurred when they were visiting over Christmas.
A similar phenomenon occurred when the incomparable Secretariat captured the Triple Crown in 1973.
She puts her survival down to a moment that occurred when she was 12.
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com