dot1 /dɒt $ dɑːt/ ●●● S2 noun [countableC] 2 on the dot informalTIME/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.
3 FARsomething that looks like a small spot because it is so far away 〔因相距很远〕看似一个小点的物体 The plane was just a dot on the horizon. 飞机当时只是地平线上的一个小点。
→ the year dot at year(14)