You can easily do a web search and find the average

來源: 屋漏痕 於 2009-12-29 08:13:13 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (137 bytes)

of each position you are interested in. However, average is average. What's reasonalbe to one person may not be reasonable to another.

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