advance warning signal

 
       
  • 预先警告信号,预告信号(机)

advance warning signal的用法和样例:

例句

  1. Experts regarded it as a warning signal of an economic smashup.
    专家们把它看作是一场经济灾难的警告信号。
  2. A colored flare used as a warning signal for trucks and railroad trains.
    信号火一种为卡车或火车作警告信号的有色火焰
  3. So they had bypassed the warning signal.
    因此他们没有让警报信号系统起作用。
  4. Please give us advance warning of any changes to the schedule.
    工作日程如有改动,请事先通知我们。

advance warning signal的相关资料:

临近单词

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