People were rudely awakened by a siren just outside their window.

人们被窗外的一声警报惊醒了。

《柯林斯英汉双解大词典》

Remember that hearing a siren or tone alert radio does not mean you should evacuate.

记住，听到警报或人声广播并不意味着你需要撤离。

youdao

There's a siren in the background so I missed the answer.

背景里有警笛声，所以我没听到答案。

youdao

"The policeman who ran into them was not only drunk, but had gone through a red light and had no siren on.

VOA: standard.2010.05.19

There's a siren in the background so I missed the answer.

抱歉刚才警报响了,我太没听清

耶鲁公开课 - 博弈论课程节选

Very few white wines call me back like a siren song, but this one does.

FORBES: Wine Of The Week: Fruili Sauvignon Blanc

The television stayed on day and night, singing like a Siren in the crowded house.

NEWYORKER: Where I Learned To Read

If that monitor senses a lightning strike within 10 miles, a siren goes off, and every ballgame is immediately over.

FORBES: Indiana State Fair Stage Collapse, a Youth Softball Siren, and Respecting the Weather