
- UID
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- 帖子
- 402
- 主题
- 6
- 注册时间
- 2011-7-2
- 最后登录
- 2016-8-13
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Perhaps it helps to visualize:
--------------------------Bid-----------------------Mid------------------------Ask--------------------------
<--seller underpaid-->||<-------seller happy---------------------------------------------------------->
<-----------------------------------------------------buyer happy--------->||<---buyer ovepaid------> |
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