The train whistle blew as we left the station.

我们离开车站时火车的汽笛响了。

《牛津词典》

We used to hear the train whistle at night.

过去我们常会在晚上听到火车的汽笛声。

youdao

But before he can pull the trigger, a train whistle startles him.

但是在他开枪之前，一辆列车经过，汽笛声吓了他一跳。

youdao

The train whistle blew just as the sun was coming up.

VOA: special.2009.04.11

A train whistle broke into Paul's thoughts.

VOA: special.2009.04.11

It is night time. And the only sound that can be heard is the long, lonely whistle coming from the train's engine.

VOA: special.2010.06.13

Layers of cleanly picked guitar, shuffling drums and an organ (or is that a distant train whistle?) weave around Cabic until the whole song sounds like a sigh.

NPR: Vetiver: Shaggy Folk, Dug Out Of Amber

The passengers of the Kodama, a bullet train that passed there every night, could have heard my brother's trumpet mixed with the whistle from the train.

NPR: 'A Tale of Music': From 'Literature from the Axis of Evil'

We heard the whistle sound as the train disappeared into late afternoon.

NEWYORKER: Midnight in Dostoevsky