They were sophisticated tool makers with high social and cognitive skills.

他们具有高度的社交及认知能力，制造工具非常有经验。

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To test the theory, the scientists recreated what ancient tool makers might have done by heating a pile of silcrete stone in a fire pit.

为了检验这个理论，科学家们通过在一个火坑里加热砾岩石，重现了远古工匠们可能的做法。

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Tool makers increasingly incorporate refactoring support into their products (and, indeed, Eclipse has a refactoring menu full of goodies), but it is still a process that requires manual steps.

工具厂商不断在其产品中结合对重构的支持(实际上Eclipse就有一个重构菜单，提供了很多支持工具)，但这仍然是一个需要手工操作的过程。

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The machine is not the issue and the tool makers are simply not diagnostic specialists.

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The work starts with tool makers--those companies that are building and refining the equipment needed to make solar cells.

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On the LED chip-supply side there's also Seoul Semiconductor, and there are LED semiconductor tool makers, like Germany's Aixtron and Emcore Corp.

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