1·The taxi showed up on the dot.
出租车准时到了。
—— 《牛津词典》
2·Breakfast is served at 8 on the dot.
8点整开早饭。
—— 《牛津词典》
3·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》
4·Two o'clock on the dot! How's that for punctuality!
两点整！够守时吧！
—— 《牛津词典》
5·He always leaves work at six on the dot.
他六点钟总是准时下班。
6·B: Not very long. I arrived here on the dot.
对不起，我迟到了。你到这儿很长时间了吗。
7·The three o 'clock train arrived on the dot.
三点钟那班火车准时到达。
8·He's very punctual always arrives on the dot.
严守时刻的，准时的，正点的。
9·The train arrived on the dot of three o'clock.
那辆火车三点钟准时到达。
10·He arrives on the dot. I was sure he'd be late.
他准时到了。我本以为他会迟到的。