punc·tu·al /ˈpʌŋktʃuəl/ adjectiveadj formal ON TIMEarriving, happening, or being done at exactly the time that has been arranged 准时的,守时的,如期的 SYN on time She’s always very punctual for appointments. 她一向准时赴约。
the punctual payment of invoices 准时结清费用清单
—punctually adverbadv
—punctuality /ˌpʌŋktʃuˈæləti/ noun [uncountableU]