punctual
adjective uk/ˈpʌŋk.tʃu.əl/ us/ˈpʌŋk.tʃu.əl/
准时的，守时的
arriving, doing something, or happening at the expected, correct time; not late
a punctual start to the meeting 准时开会
He's fairly punctual (= he usually arrives on time). 他通常非常准时。