The taxi showed up on the dot.

出租车准时到了。

《牛津词典》

Breakfast is served at 8 on the dot.

8点整开早饭。

《牛津词典》

They appeared on the dot of 9:50 p.m. as always.

他们同往常一样在晚上9点50分准时出现了。

《柯林斯英汉双解大词典》

And you can experience it all on the Internet at americanhistory-dot-s-i-dot-e-d-u.

VOA: special.2010.01.11

When the program is on your computer you say dot slash and this means on my computer.

当程序位于你的电脑上时，敲入,就意味着在我的电脑上运行。

哈佛公开课 - 计算机科学课程节选

So it's a little spot, a little dot on the map.

所以，它是个小地方，在地图上，它也只是一个小点。

和纽约的留学生 - SpeakingMax英语口语达人

Employees are encouraged to behave like office drones, punching in at 9 and leaving at 5 on the dot.

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We took the Williamsburg Bridge and arrived at 2:30 p.m. on the dot.

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When the first day's doodle changed at midnight on the dot, she was captive in front of the computer to watch.

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