round the clockWiktionary 原文释义（英文）介词短语 Prepositional phrase(idiomatic) Nonstop, 24 hours per day.形容词 Adjective(idiomatic) Alternative form of round-the-clock.名词 Noun(games) A variant of the game of darts in which players attempt to hit each section of the dartboard sequentially, from lowest to highest number.