汽笛的英文：
hailer
hooter
siren
whistle
A steam brake,whistle,winch,etc,ie worked by steam
蒸汽制动器、汽笛、汽动绞车
A police car siren.
警车汽笛
Stop work when the whistle blows
汽笛一响就停止工作。
The hooter went for the workers to stop work.
工人下班的汽笛响了。
Stop work when the whistle blows.
汽笛响时，停止工作。
He was breathless with running
开车的汽笛响了。
The sirens sounded an air-raid warning
汽笛响起了空袭警报。
They quitted work when the siren sounded.
汽笛一响，他们就停止工作了。
The ship's whistle kept hooting.
轮船上的汽笛呜呜叫。
The whistle warned visitors that the ship was ready to sail.
汽笛通知旅客船即将开航。
汽笛; 高声信号器
hooter是什么意思：
n. 汽笛，警笛
Then a long blast of the hooter woke me from my reverie.
然后，汽笛一声长鸣把我从沉思中拉回。
Didn't factory workers always sound the hooter as signal for a riot?
工人们在厂里暴动，也常常放汽笛为号，可不是么？
A sudden blast from the hooter resounded through the factory making Wu Sun-fu start violently and pale slightly
此时突然一声汽笛叫，呜——呜的，响彻了全厂，吴荪甫猛一惊，脸色稍稍有点变了。
n. 汽笛，警报器；妖妇；塞壬
It is said that she is a siren.
据说她是个妖艳女人。
Somewhere in the distance a siren hooted.
远处某个地方响起了警报声。
The crowd waved and the liner responded with a blast on its siren.
人群挥手相送，大客轮鸣响汽笛作答。