这可能会提高“纸石油”的价格，但并不能提高变成石油的那些黑色原料精炼器的价格。
That may raise the price of "paper barrels", but not of the black stuff refiners turn into petrol.
其目标可能是位于纳坦兹核精炼厂的离心器。
The target may have been the centrifuges at its nuclear refinery at Natanz.
化学家们修补了热催化器与金属催化器以精炼材料。
The chemists have tinkered with heat and metal catalysts to refine their materials.
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