half-hourly
adjective[before noun],adverb
uk/ˌhɑːfˈaʊe.li/us/ˌhæfˈaʊr.li/happeningtwiceeveryhour:
半小时一次(的),每小时两次(的)There's a half-hourlytrainserviceto London from here.从这里到伦敦半小时就有一趟火车。
Relating to regular periods of time
- -ly
- afternoons
- annual
- annum
- bi
- biannual
- biannually
- biweekly
- daily
- evenings
- fortnightly
- nights
- p.c.m.
- p.w.
- pa
- per annum
- per calendar month
- quadrennial
- quarterly
- season