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. Black rainstorm warning signal is announced.
    黑色暴雨警告生效时。

advance warning signal的相关资料:

临近单词

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