汽笛的英文：
hailer
hooter
siren
whistle

参考例句：
  • 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。
hailer是什么意思：
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。
    siren是什么意思：
    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。

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