semaphore signal

名词 n.
中文释义

英文释义

名词 n.
  1. Any signal sent by semaphore.
  2. A railway signal with a moving arm mounted on a signal post or gantry, the position of the arm indicating whether a train should stop or proceed; they are now largely replaced by colour light signals.
    — The phased programme will run from 1 to 23 February, with semaphore signals replaced with modern colour lights.

词形变化

semaphore signals plural
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