on the dotinformalTIME/AT A PARTICULAR TIME exactly on time or at a particular time 在指定时间,准时 I’ll be there on the dot. 我会准时到那里。
at three o'clock/seven thirty etc on the dot (=at exactly 3:00/7:30 etc) 正好3点/7点30分等 Mr Green arrived at six on the dot. 格林先生正好在6点到达。
arrived ... on the dot• Matthew arrived on the dot of seven.