English version

side benefit

From Longman Dictionary of Contemporary Englishside benefitˈside ˌbenefit noun [countable]  an additional advantage or good result that comes from something, besides its main purpose A side benefit to filming close-up shots is that your microphone will pick up clearer sound.
Examples from the Corpus
side benefitThere is a side benefit, however.A side benefit for Deborah was that she gained some extra time to get caught up on work and to see Paul.A side benefit is that storing documents by date and time provides context.A side benefit, according to the Dallas Police Force: reduced crime rates.But an unintended side benefit was a gain in air quality.
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