The spike might have helped in extracting meat from snails, a popular Roman food, and the spatula invoking sauce out of narrow-necked bottles.

长钉可以用来挑出蜗牛肉，这是一种流行的罗马食物，而抹刀可以从窄颈瓶中提取调味酱。

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Dr. Gill and his team were able to come to this conclusion by extracting bacterial DNA from the feces of two volunteers.

吉尔博士和他的研究小组是通过提取两位志愿者粪便中的细菌 DNA 后得出这一结论的。

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By chemically extracting nickel form the ash, they produced 100 pounds of nickel per acre of land at a total cost per pound slightly above that of current mining.

通过化学方法从灰烬中提取镍，他们每英亩土地生产了100磅镍，每磅的总成本略高于目前的采矿成本。

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Instead, Schlumberger is planning more of what it is best at: pushing the technological boundaries of extracting the black stuff.

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Then there is the laborious process of extracting the precious elixir.

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What Dr Shields did was to work out a way of subtracting the noise, and thus extracting the signal.

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