🇬🇧 en ru 🇷🇺

half-hourly adjective

  • Once every half-hour, every 30 minutes.
 получасово́й

half-hourly adverb

  • At intervals of a half-hour, every 30 minutes.
 [[каждый|ка́ждые]] [[полчаса́]], два [[раз|ра́за]] в [[ча́с]]
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