a transaction
- 网络一笔交易
 
a transactiona transaction
一笔交易
traded -... ... (business to business) 商业的,贸易的 (a transaction) 一笔交易,一次交换 n (customers) 顾客,主顾 n ... 
                1
        
      2
        
      3
        
      4
        
      5
        
      6
        
      7
        
      8
        
      9
        
      10
        
      11
        
      12
        
      13
        
      14
        
      15
        
      16
        
      17
        
      18
        
      19
        
      20
        
      21
        
      22
        
      23
        
      24
        
      25
        
      26
        
      27
        
      28
        
      29
        
      