For centuries, scientists have tried to turn base metals into precious ones, most commonly lead into gold — even Isaac Newton, the father of modern science, was an alchemist.

几个世纪以来，科学家都在尝试将基本金属变为贵金属，最常见的是铅变成黄金——甚至现代科学之父艾萨克·牛顿也是一个炼金术士。

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In turn, the base for Default contract in each country store will refer to the appropriate regional base contract.

而每个国家商店中的缺省契约的基础契约又将引用合适的地区基础契约。

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The ProcessConnector class in turn extends connector, which is the base class of the connector framework.

ProcessConnector类反过来扩展Connector，这是连接器框架的基础类。

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So, although this version of the philosophers' stone may not actually turn base metals into gold, it could yet end up, metaphorically, making some.

ECONOMIST: Ionic solvent

The departure of President John Maloney comes as Tumblr attempts to figure out how to turn its base of nearly 54 million blogs into a viable business.

WSJ: Tumblr's President Resigns

Resistance from the installed base has been detectable for years, with CIOs grousing about having to qualify an entirely new image just because Microsoft wants to turn its base over again.

FORBES: The PC Industry Is Digging Its Own Grave