at once
    
  
    
    
      to be
    
  
    
    
      to speak
    
  
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→jiu4shi4shuo1 • jiùshìshuō
in other words
that is, namely
也 就是說,別 白費勁 了
in other words, don't waste your energy
就是說,質量 不 合格
in other words, the quality is not up to standards