比罗后来说他只在波洛克的画室待了“几个小时”，并且是在工作人员“在场”的情况下，所以根本不可能用橡胶去拓什么模子。

Biro later noted that he had spent only a "few hours" in Pollock's studio, in the "presence of staff," making it impossible for him to have made a rubber stamp.

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淡水河谷现在是世界上第二大矿业公司：比必和必拓小，但是比力拓和其它比较出名的对手要大。

It is now the world's second-largest miner: smaller than BHP Billiton, but bigger than Rio Tinto and other better-known rivals.

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近几年，没有哪家矿商比力拓更积极地致力于同客户敲定长期价格。

In recent years there had been no miner more committed to fixing long-term prices with customers than Rio.

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