有时候拍卖师会限定最低报价增幅，从而使下一次竞价必须高于当前的最高价格。

Sometimes the auctioneer sets a minimum amount by which the next bid must exceed the current highest bid.

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钻石原石价格下跌更严重。比起去年7月在一些拍卖会上拍出的最高价，原始价格下降多达75%。

Rough diamond prices have fallen even more, as much as 75 percent since their peak last July at some auctions.

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早在1986年，Karpidas夫妇就出价三十八万五千美元将该画作收入囊中，这在当时是沃霍尔一生的画作中拍卖的最高价了。

Back in 1986 Mr and Mrs Karpidas had paid $385,000 for the picture, the highest price ever paid for a Warhol at auction during the artist's lifetime.

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