Then from the 19th Century there is an early example of a manufactured iron nail, and from the English Civil War, a solid cannon ball.

然后有一个来自19世纪的早期例子——一个工业化制造的铁钉，还有来自英国内战时期的加农炮弹。

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"The rollercoaster is wooden and so unlike rides made from iron and steel there was always a chance of the odd nail or screw that would not be entirely flat," he said.

奥尔说：“这个过山车道不是由钢铁制成的，它是木制的，由此，有可能有旧钉子或者螺丝翘起造成轨道的不平坦。”

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Vertical ridges on the nail mean a possible iron deficiency.

指甲上的垂脊意味着可能缺铁

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The result was that the nail could attract little bits of iron on a table thanks to the magnetic field.

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If this ends up being the proverbial nail in the coffin for any of these banks it will come with a heavy dose of painful iron because the U.S. government that bailed them out just three years ago may send them back on the path toward failure.

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