how often  

how often

how often 

phrase. 多长时间一次 

how often do we do this? 我们是否经常这样?
Which procedure is called by whom and how often? 哪个过程被谁调用,调用的频率如何?

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  • phrase. 多长时间一次
  • 1. how often do we do this?

    我们是否经常这样?

  • 2. Which procedure is called by whom and how often?

    哪个过程被谁调用,调用的频率如何?

  • 3. how often do you have to do it before you see results?

    在看到结果之前,你需要多久下一次决心?

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