I could stuff myself with ten chocolate bars and half an hour later eat a big meal.

我可以给自己塞下10块巧克力，并在半小时后再大吃一顿。

《柯林斯英汉双解大词典》

Half an hour later I wasn't joking.

半小时后，我不是在开玩笑了。

youdao

To make things worse, it started raining heavily half an hour later.

更糟糕的是，半小时后开始下起了大雨。

youdao

Half an hour later a shout went up from the crowd of people watching: "Allahu Akbar!"

BBC: Bombers fail to derail Iraq's election success

Half an hour later and the three men and single lady were still standing.

BBC: The Merchant of Venice: A protest within a play

Less than half an hour later, he was spotted by Fish and Wildlife wardens and a chase ensued.

NPR: LAPD: 3 Parties To Split $1 Million Dorner Reward