總會有代價,很可能是另一個指標下
回答: 確實有些牽強,想說的是在一個充分競爭的市場裏,同等價位下,玩的就是各種指標的平衡,一般來說,一個指標上,總會有代價,很可能是另一
由 halleluya
於 2015-10-06 12:08:31
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