danger signal

 
  • n. 危險信號

danger signal的用法和樣例:

例句

用作名詞 (n.)
  1. A red lamp is used as a danger signal.
    紅燈用作危險信號。
  2. The engine also began its whistle-calls of four parts, with which it signalled danger to important crossings.
    機車也開始在過重要的道口時,發出斷續四響的汽笛聲,作為危險信號。

danger signal的相關資料:

臨近單詞

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