primary clock

 
  • 主鐘,主時(shí)鐘,母鐘

primary clock的用法和樣例:

例句

  1. I saw from the station clock that I had timed my arrival just about perfectly.
    我從主時(shí)鐘上看到我準確無(wú)誤地算好了到達的時(shí)間。
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