He could freeze to death. At about twelve o'clock, the man decided to stop to eat his lunch.

VOA: special.2010.05.01

sometimes even twelve o'clock at night, so.

有时候甚至要半夜十二点。

比佛利山庄的购物街 - SpeakingMax英语口语达人

It was twelve o'clock when we knocked on Ebenezer's front door.

VOA: special.2011.01.22

The W.H.O.report estimates that twelve million people will be found to have some form of cancer this year.

VOA: special.2009.03.02