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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Supporters ate piles of beef brisket and toasted marshmallows at the fire pit.

支持者们在火坑边吃着成堆的牛胸肉和烤棉花糖。

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A fire pit?

一个篝火？

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No doubt they're stronger with Howard, much better defensively, and point guard Steve Nash was an excellent pickup, but unless Los Angeles plans to build a fire-pit in the middle of the court, I still don't see them shutting down Durant or his dynamo teammate Russell Westbrook.

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The house has a fire pit on the yard, an infinity-edge pool overlooking the ocean, five bedrooms, five full baths and an outdoor shower.

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Indeed, during a visit earlier this summer, business was brisk at a Ravella hotel bar which has Tuscan-inspired views of manicured hedges surrounding a fire pit, with customers sipping martinis and noshing on pappardelle with veal meatballs.

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