🔑uponBrE/əˈpɒn/NAmE/əˈpɑːn/, /əˈpɔːn/preposition🔑(formal, especiallyBrE) = on◆Thedecisionwasbasedupontwoconsiderations. 这一决定基于两种考虑。HELPAlthoughtheworduponhasthesamemeaningason, itisusuallyusedinmoreformalcontextsorinphrasessuchas◆onceuponatimeand◆rowuponrowofseats * upon 与 on 同义,但通常用于较正式的场合或 once upon a time 和 row upon row of seats 等短语中。… upon…usedtoemphasizethatthereisalargenumberoramountofsth(强调数目或数量大)◆mileuponmileofdustyroad绵延数英里尘土飞扬的道路◆thousandsuponthousandsofletters成千上万封信件●(almost) uˈponyouifsthinthefutureisalmostuponyou, itisgoingtoarriveorhappenverysoon近在咫尺;即将来临◆Thesummerseasonwasalmostuponthemagain. 转眼间他们又要过夏天了。●ˌonceuponaˈtimeused, especiallyatthebeginningofstories, tomean'alongtimeinthepast'(用于故事的开头)从前,很久以前◆Onceuponatimetherewasabeautifulprincess. 从前,有一位美丽的公主。