英语单词分类 轻松记单词

danger signal

danger signal基本解释

危险信号

danger signal相关例句

用作名词(n.)
  • A red lamp is used as a danger signal.
    红灯用作危险信号。
  • The engine also began its whistle-calls of four parts, with which it signalled danger to important crossings.
    机车也开始在过重要的道口时,发出断续四响的汽笛声,作为危险信号。