on the dot
成語所屬單字dot
on the dot — 慣用語
1. at exactly the stated time; not early and not late
1.慣用語
釋義
準時地；分秒不差
at exactly the stated time; not early and not late
例句
The delivery driver arrived at eight on the dot, just as the shop opened.
Jessica promised to finish the report by five, and she handed it in on the dot.